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Journal articles on the topic 'Mechanical composition of soil'
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1
H.A., Rayimberdiev, Eshonkulov M.A., Kholboev B., Raxmonov I., and Mirsharipova G. "Mechanical composition and properties of irrigated soils of syrdarya region." American Journal Of Agriculture And Horticulture Innovations 5, no. 3 (2025): 9–13. https://doi.org/10.37547/ajahi/volume05issue03-03.
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The article presents the main soil types in the region and their distribution by mechanical composition. It also presents methods for determining the mechanical composition of the region's soils and the results of the analysis of the mechanical composition of the soil by fractionation
2
Manafova, F. "Composition and Structure of Soils of the Gobustan Massif." Bulletin of Science and Practice 10, no. 6 (2024): 100–104. http://dx.doi.org/10.33619/2414-2948/103/14.
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Gobustan district is located in the eastern part of Shamakhi, 101 km from Baku. The relief is abrasion rocky. The soil cover here is varied. In the eastern part of Gobustan, gray brown Solonetz soils are common, in the north-west — gray-brown soils. Soil samples were taken, and individual types of soil cover structures were determined. The discovered soil structures are mainly tree-like in nature. Mechanical analysis data show that the upper arable and subarable horizons of these soils, 0-40 and 0-50 cm deep, are characterized by a clayey-heavy loamy mechanical composition. However, in the upper horizons of these soils the content of physical clay is relatively less and amounts to 46.1-52.8%, and the amount of silt particles does not exceed 22.2-28.4%.
3
Salimova, Hilola, and Hafiza Artikova. "Mechanical composition and physical properties of irrigated soils of the gijduvan district of Bukhara region." E3S Web of Conferences 549 (2024): 03027. http://dx.doi.org/10.1051/e3sconf/202454903027.
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The mechanical composition and physical properties of soils in irrigated agriculture in the Gijduvan district of Bukhara region were studied. In the Hamid Olimjon district (Sarmijon) area, Omad farm soil pits (sections) were dug on the contour 576. In the Gulistan district, the contours of the Shukur Tokhta farm 282-283 and the contour 648 of the Hasan Rajabi farm of the Gijduvan region, and the mechanical composition and physical properties of the soil were analyzed from the samples taken. made the mechanical composition of the soil is light, medium and heavy sand, porosity is considered unsatisfactory.
4
Onay, T., A. Zandybai, and A. Kydyrova. "Granulometric composition of Astana's soil." BULLETIN of the L.N. Gumilyov Eurasian National University. Chemistry. Geography. Ecology Series 151, no. 2 (2025): 255–69. https://doi.org/10.32523/2616-6771-2025-151-2-255-269.
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Understanding the granulometric composition of urban soil is essential for assessing pollution levels and managing soil resources effectively. The particle-size distribution of soil significantly affects the movement and accumulation of pollutants, water infiltration, chemical interactions, and biological processes, including microbial activity and nutrient cycling. This study investigated the mechanical composition of soils in Astana by collecting samples from 60 sites across various administrative districts, including Esil, Baikonur, Almaty, Saryarka, and Nura. The analysis showed that heavy loamy soils dominate throughout the city. The average clay content in the soil samples was 44.9% in Esil, 45.7% in Baikonur, 45.0% in Almaty, 42.6% in Saryarka, and 45.4% in Nura. These types of soils are beneficial for agricultural and landscaping purposes because they retain moisture and nutrients well. However, they also have limitations, such as a higher susceptibility to erosion, anthropogenic contamination, and reduced permeability under dry conditions, which may affect vegetation growth. Given these challenges, proper management strategies are needed to protect urban soils from degradation and ensure long-term functionality. The results of this research provide valuable data for environmental zoning and decision-making. They can support sustainable land use planning, pollution prevention, and long-term soil quality monitoring in Astana, contributing to the city’s ecological safety, resilience, and green infrastructure development.
5
Urazbaev, I. U., and N. K. Masharipov. "Fundamental Scale of Evaluation of Productivity of Irrigated Gray-Meadow Soils which are Appointed for Growing Melon Crops." Alinteri Journal of Agriculture Sciences 36, no. 1 (2021): 257–59. http://dx.doi.org/10.47059/alinteri/v36i1/ajas21038.
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In the following article, the basic scale for assessing the fertility of irrigated gray-meadow soils planted with melons is based on the mechanical composition of the soil. The mechanical composition of the soil correlation coefficient between the yields of melons and gourds was 0.88 for watermelon, 0.89 for melon and 0.88 for pumpkin. Accordingly, light sandy soils for ground watermelon and squash were rated as productive with a score of 100 points, heavy sandy soils with a score of 85 points for watermelon and 75 points for pumpkin. For the melon crop, medium sandy soil was rated at 100 points, heavy sandy soil at 90 points, and light sandy soil at 75 points.
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Kholboev, Bakhrom E., Norboy B. Japakov, Ikrom A. Rakhmonov, Mamur M. Akhunboboyev, and Muzaffar Oblokhlov. "Formation, morphology and mechanical composition of meadow-alluvial soils in the Jizzakh desert." BIO Web of Conferences 105 (2024): 05001. http://dx.doi.org/10.1051/bioconf/202410505001.
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This paper explores the origins, formation processes, properties, and characteristics of meadow-alluvial soils found in the Jizzakh desert, as well as their morphological structure. The article delves into the role of soil-forming factors, the conditions of their formation, and the significance of parent rocks and deposits in shaping the mechanical structure of the soil. The granulometric composition of meadow-alluvial soils, including the quantity of dust and clay particles and the total amount of microaggregates, is examined. The mechanical composition of arable and sub-arable soils is described, along with the lithological structure and structural composition of the salt profile.
7
Salimova, Hilola, and Hafiza Artikova. "Determination of the mechanical composition and salinity of the Bukhara Gijduvan district of the Bukhara region." E3S Web of Conferences 389 (2023): 04012. http://dx.doi.org/10.1051/e3sconf/202338904012.
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In the article, the mechanical composition and type and level of salinity of meadow-alluvial soils of Gijduvan district of Bukhara region were determined. According to the obtained data, this type of soil is mostly non-saline, salinity is found in the layer below 1 meter. The mechanical composition is moderate in the driving layer, but heavy in the lower layers. In different soil-climatic conditions of our republic, including determining the general properties of irrigated soils of Gijduvon district of Bukhara region, determining the state of land reclamation, reducing the effects of degradation processes occurring in oasis soils, maintaining, increasing and protecting soil fertility, and carrying out research on effective use of land going is important. The reclamation condition of Bukhara oasis soils, their mechanical composition, their origin and causes of formation, the reclamation condition of meadow alluvial soils with different levels of salinity, the melioration condition of the soils of the meadow alluvial soils are noted to be better than that of other meadow alluvial soils. The change in the composition of the absorption complex of saline soils and the increase in the share of sodium and magnesium cations in it is due to the movement of salts in the Aral Sea with the help of the wind. It is necessary to take into account not only the mechanical composition of the soil, the level of salinity, but also the type and chemistry of salinity in salt washing. It is highlighted that special agrotechnical activities are carried out on these soils.
8
Trautvain, Anna I., Evgeniy A. Yakovlev, and Anatoly M. Gridchin. "Analysis of the Effectiveness of the New Generation of Additives in Improving Physical and Mechanical Properties of Highway Subgrades." Materials Science Forum 1017 (January 2021): 101–10. http://dx.doi.org/10.4028/www.scientific.net/msf.1017.101.
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At present, the introduction of only organic or inorganic binder is not always sufficient for the practical application of stabilized soils. The research investigated the effect of the stabilizing additives Chimston, Baustab and Dorstab on changing a number of parameters over time, such as: average density, water saturation, ultimate compression and tensile strength, and frost resistance. All the researched parameters were determined at intermediate and target age — 7, 14 and 28 days respectively. Tests to assess the effectiveness of various stabilizing additives in strengthening loamy soil have shown the feasibility of using Baustab and Chimston-3 additives (in the dosage of 2%). Introduction of additives into the soil composition allowed obtaining soil with high strength characteristics and higher frost resistance as compared to the control composition. Composition No.2 has the compressive strength of 5.1 MPa and the tensile strength of 1.6 MPa. Composition No.7 has the limit of compression strength of 5.4 MPa, and the limit of tensile strength of 1.27 MPa. Thus, both compositions have the strength grade M40. Such soil will be subject to minimal subsidence and loss of strength.
9
Trautvain, Anna I., Evgeniy A. Yakovlev, and Anatoly M. Gridchin. "Analysis of the Effectiveness of the New Generation of Additives in Improving Physical and Mechanical Properties of Highway Subgrades." Materials Science Forum 1017 (January 2021): 101–10. http://dx.doi.org/10.4028/www.scientific.net/msf.1017.101.
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At present, the introduction of only organic or inorganic binder is not always sufficient for the practical application of stabilized soils. The research investigated the effect of the stabilizing additives Chimston, Baustab and Dorstab on changing a number of parameters over time, such as: average density, water saturation, ultimate compression and tensile strength, and frost resistance. All the researched parameters were determined at intermediate and target age — 7, 14 and 28 days respectively. Tests to assess the effectiveness of various stabilizing additives in strengthening loamy soil have shown the feasibility of using Baustab and Chimston-3 additives (in the dosage of 2%). Introduction of additives into the soil composition allowed obtaining soil with high strength characteristics and higher frost resistance as compared to the control composition. Composition No.2 has the compressive strength of 5.1 MPa and the tensile strength of 1.6 MPa. Composition No.7 has the limit of compression strength of 5.4 MPa, and the limit of tensile strength of 1.27 MPa. Thus, both compositions have the strength grade M40. Such soil will be subject to minimal subsidence and loss of strength.
10
Abdurakhmanov, Nodirjon, O‘lmasboy Sobitov, Sherali Mansurov, et al. "Agrochemical properties of gray-pasture soils under irrigation of mirzachol oasis." BIO Web of Conferences 141 (2024): 02002. https://doi.org/10.1051/bioconf/202414102002.
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This article presents the results of research conducted in the irrigated lands of the Mirzachol oasis, including information on the amounts of total and mobile shales of humus and nutrients in different degrees of plastered grassland soils. Changes in the amount of nutrients depending on the mechanical composition of the soil, i.e., when the nutrients in the soils with heavy mechanical composition are compared with the soils with light mechanical composition, it is shown that the amount of nutrients is higher in the relatively mechanical composition of heavy soils. The relatively low supply of humus and nutrients in the composition of gray-meadow soils is explained by the poor agro-physical and water-physical properties of plastered soils. Based on FAO data, the total area of gypsum soils in the world is presented and they are divided into groups according to the degree of gypsum. Opinions of various scientists and experts on the formation of gypsum in the lands of Mirzachol oasis, chemical properties of soils and soil reclamation conditions are presented. General and mobile forms of humus and nutrient elements in unplastered, weakly and moderately plastered soils were analyzed in detail. Recommendations aimed at improving the agrochemical condition of the studied soils, restoring and increasing their productivity are given.
11
Sattorova, Mahfuza, and Mahliyo Raximova. "The mechanical composition of irrigated sandy desert soils in the Jondor district of Bukhara region, and the amount of nutrients in them." E3S Web of Conferences 420 (2023): 03010. http://dx.doi.org/10.1051/e3sconf/202342003010.
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The article presents information about the genesis of sandy desert soils of Bukhara region (on the example of the Jondor district), distribution, mechanical (granulometric) composition of the soil, humus in the composition of the soil, the amount and levels of availability of common and mobile nutrients, the level of salinity, the type of these soils, as well as about the usage of these soils in agriculture.
12
Silinskiy, Viktor, and Leonid Sokolov. "A NEW COMPOSITION OF FERTILE SOIL." Problems of risk management in the technosphere 2024, no. 4 (2024): 190–201. https://doi.org/10.61260/1998-8990-2025-2024-4-190-201.
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The properties of the soil obtained by recycling sediment formed at water treatment plants during water treatment have been studied. A new vegetable-fertile mass of peat, river sand and sediment with the addition of cotton dust has been developed. The structure of the soil is resistant to the effects of adverse mechanical and physico-chemical natural factors, recommended for landscaping parks and lawns in urban environments, for filling landfills with municipal waste, for strengthening coastal and coastal areas of rivers and reservoirs, as well as in the production of fertile soils in horticultural and urban farms, when growing vegetable, berry and flower crops in greenhouses. Created and tested in real climatic conditions, the soil soil expands the range of fertile and nutritious mixtures, is based on the use of secondary and natural raw materials, is not difficult to prepare. The value of the total prevented environmental damage from land pollution by precipitation of water treatment exported to the municipal landfill is calculated.
13
Brasse, Krystian, Tomasz Tracz, Tomasz Zdeb, and Piotr Rychlewski. "Influence of Soil-Cement Composition on its Selected Properties." MATEC Web of Conferences 163 (2018): 06006. http://dx.doi.org/10.1051/matecconf/201816306006.
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The paper discusses the results of mechanical and technological tests of soil-cement composites made with cohesive soil. The compositions of analysed soil-cement mixtures differed in terms of their cement paste volume fractions and water-cement ratios. Limiting values of these technological parameters that enable the application of the soil-cement mixtures obtained in real life conditions for the purposes of the Deep Soil Mixing (DSM) method were determined. Based on the test results obtained, it was found that mechanical properties of the materials analysed were very sensitive to changes in their compositions. Variations in the volume fraction of cement paste within the range analysed caused mechanical properties to change even by an order of magnitude.
14
Han, Weiyi, Ye Li, and Hang Yin. "The Influence of Mechanical Composition and Mineral Composition of Calcareous Soil on Slope Farmland on Phosphorus Fixation." Applied Sciences 11, no. 9 (2021): 3731. http://dx.doi.org/10.3390/app11093731.
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Soil erosion on slope farmland causes the degradation of soil quality and eutrophication of water bodies due to the loss of phosphorus. In order to explore the influence of soil mechanical composition and mineral composition on phosphorus fixation, we selected calcareous soil on slope farmland in the Three Gorges Reservoir area as the research object and separated the samples on the basis of particle size. Next, we determined the content of different forms of phosphorus for each particle size, and then characterized and analyzed the mineral composition. The adsorption performance of each particle size was also studied. The results show that the calcareous soil on slope farmland has a high proportion of coarse fractions, and the carbonate minerals enriched in coarse fractions will fix a large amount of phosphorus and degrade soil quality. As slope farmland is prone to soil erosion, when the soil undergoes selective migration, the loss of fine fractions will increase the proportion of coarse fractions and aggravate soil quality degradation. Meanwhile, because of the large amount of phosphorus adsorbed by fine fractions, the available phosphorus is easily lost with fine fractions, leading to eutrophication of water bodies.
15
Septianto, Septianto, R. M. Rustamaji, and Eka Priadi. "UTILIZATION OF SPENT BLEACHING EARTH WASTE IN SOIL-CEMENT STABILIZATION FOR ROAD FOUNDATION LAYERS IN TERMS OF THE MECHANICAL PROPERTIES OF SOIL." Jurnal Teknik Sipil 23, no. 3 (2023): 417. http://dx.doi.org/10.26418/jts.v23i3.67769.
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Various studies have been carried out to improve the parameters of soil mechanical properties. Efforts to improve the mechanical properties of the soil can be carried out in multiple ways, including automated means through compaction and chemical means through the addition of cement base materials. To improve the stability and properties of the subgrade soil, the cement base material that is commonly used is Portland Composite Cement (PCC). In several studies, apart from cement base materials, waste base materials have also been used for stabilization subgrade. This includes using bleached soil residues and rice husk ash as additives to stabilize the soil. The results showed that the use of soil bleaching waste in soil cement stabilization can be used to improve the mechanical properties of the embankment soil and the composition of the soil bleaching waste mixture so that mechanically, it is proven to provide the most effective improvement so that it can be used for road foundation layers made of cement soil. As part of this research, many tests can be carried out on normal and stabilized soils. Various percentages of SBE are 5%, 10%, 15%, 20%. PCC is introduced into the soil at a rate of 8% of the dry weight of the soil.
16
Gong, Wenteng, Liansheng Tang, Yang Chen, and Zihua Cheng. "Application of an Artificial Neural Network Model Based on Mineral Composition to the Prediction of Physical and Mechanical Properties." Applied Sciences 13, no. 13 (2023): 7690. http://dx.doi.org/10.3390/app13137690.
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The physical and mechanical properties of soil are crucial in engineering construction, but conducting extensive experimental tests can be time-consuming, laborious, and subject to uncertainties due to the heterogeneity of the soil and variations in experimental conditions. Soil is composed of various minerals, and the mineral composition is the fundamental determinant of various physical and mechanical properties of the soil. The purpose of this study is to establish a convenient and reliable soil property prediction model based on mineral composition. To achieve this end, a dataset comprising the percentage content of different minerals in the soil, as well as the soil’s mechanical and physical properties, was collected. Using artificial neural network methods, prediction models for liquid limit, plastic limit, internal friction angle, and cohesion of the soil were developed based on mineral composition. Each model’s performance was evaluated through deviation analysis, and models with poor prediction accuracy were optimized using a genetic algorithm. The results demonstrate that the neural network model based on mineral composition can accurately predict soil properties with high applicability. This research provides a method for accurately predicting the majority of engineering properties of soil using experimental data on mineral composition, which is significant for cost savings and improving work efficiency in engineering projects.
17
Idirisov, К. A., Sh M. Bobomuratov, and A. B. Mirzambetov. "Soil meliorative condition of the south-eastern part of the Aral sea dried bottom." Pochvovedenie i agrokhimiya, no. 4 (January 4, 2024): 5–18. http://dx.doi.org/10.51886/1999-740x_2023_4_5.
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The article presents materials of scientific research carried out in the south-eastern part of the former Aral Sea dried bottom. During the study, soil sections were laid using generally accepted methods in soil science. Morphological and genetic properties of soils were described, soil samples were taken for determination of granulometric composition and chemical analyses. According to the results of determination of granulometric composition the content of mechanical elements was determined. The results of chemical analyses revealed the content of cations and anions, type and degree of salinisation, as well as the reaction of the soil environment.
18
Gafurova, Lazizakhon, Mirjalol Kurbanov, Saidjon Sidiqov, et al. "Study of evolution and fertility of degraded soils in the Kashkadarya river cone spread." E3S Web of Conferences 563 (2024): 03073. http://dx.doi.org/10.1051/e3sconf/202456303073.
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This article provides insights into the evolution of degraded soils in the Kashkadarya cone spread and the current factors influencing it. A comprehensive assessment of agrophysical, agrochemical, chemical, and microbiological properties of the degraded pale gray soils is presented, accompanied by the development of agricultural measures aimed at enhancing soil fertility. In the middle and lower segments of the cone, notable variations exist, as highlighted by M.A. Pankov. Flat elevations are characterized by light sandy and sandy soils, whereas the slopes of these elevations exhibit heavy and medium sandy soils. Flat depressions, on the other hand, feature clayey soils. This pattern extends to the bedrock within the soil, where the mechanical composition ranges from sand and loam to heavy sand and silt. In heavy sandy layers, there are occurrences of sand and silt layers and lenses, contributing to the overall mechanical composition.
19
Igamberdiyevich, Nazarov Komil, Hidoyatov Abdulloh Zohidjon o’g’li, and Khidoyatov Zahidzhan Dalivayevich. "The Effect of Gypsum Addition on The Mechanical Properties Of “Clay Sand” Soils." American Journal Of Applied Science And Technology 5, no. 4 (2025): 33–37. https://doi.org/10.37547/ajast/volume05issue04-08.
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This in the article in the composition plaster was muddy sand of the ground physical-mechanical features experience, “GIDROPROEKT” AJ test in the laboratory studied analysis is made. Granularity of the composition to strength connection and plaster added of the ground features in detail. Also, the ACIC 3.3 device using of the ground to move resistance power calculating. Engineering solutions as soil strength increase roads discussion. Research works Syrdarya in the province Sardoba in the territory take soil samples received through take went.
20
Ismoilovich, To’rayev Oktam. "Determining the water capacity demand of the soil in the study area." American Journal Of Agriculture And Horticulture Innovations 5, no. 3 (2025): 24–27. https://doi.org/10.37547/ajahi/volume05issue03-07.
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Currently, in a period of expected climate change, specific soil conditions are observed in every part of our country. In restoringthe soil structure, various chemical elements in the soil, their structure, mechanical composition, satisfaction of water demand, as well as the application of organic and mineral fertilizers to the soil and its water-holding capacity are of great importance. The main task of today is to analyze the data obtained from the analysis of the formation of soil structure depending on physicochemical factors -the amount of precipitation, the amount of water and its porosity, the type of soil, and its mechanical composition.
21
Umarov, Otabek, Zahro Bafayeva, and Elbek Qodirov. "Impact of salinity levels on the physical properties of irrigated meadow alluvial soils in Bukhara region." E3S Web of Conferences 549 (2024): 03023. http://dx.doi.org/10.1051/e3sconf/202454903023.
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This article provides data on the impact of salinity levels on the physical properties of irrigated meadow alluvial soils with varying salinity levels in the Bukhara region. It thoroughly examines the degree of influence of soil salinity on soil mechanical composition, overall physical properties, bulk density, specific gravity, and porosity
22
Bobomurodov, Sh, N. Abdurakmonov, U. Niyazmetov, Z. Baxodirov, Y. Normatov, and Z. Abdurakhmonov. "Mapping of soil properties using geographic information systems (on the example of Tashkent region)." E3S Web of Conferences 386 (2023): 04006. http://dx.doi.org/10.1051/e3sconf/202338604006.
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The article analyzes the options for mapping soil properties using GIS systems. The perspectives on the use of GIS in the efficient mapping of soil mechanical content, agrochemical, and salinization characteristics are given. The study is conducted for irrigated sierozem soils of the Parkent district of Tashkent region. The basis of the research is the analysis of soil map data of the study areas, and the generalization of the results of soil-cartographic, laboratory, and cameral-analytical studies, which were conducted by commonly use methodological instructions. As a result of the research, digital thematic maps were created for the selected areas, such as various thematic maps, such as soil mechanical composition, soil nutrient status, and salinity maps.
23
Jiang, Nan, Changming Wang, Qian Wu, and Shuo Li. "Influence of Structure and Liquid Limit on the Secondary Compressibility of Soft Soils." Journal of Marine Science and Engineering 8, no. 9 (2020): 627. http://dx.doi.org/10.3390/jmse8090627.
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The macroscopic mechanical properties of natural sedimentary soft soils, which are usually linked to their microstructure, are different from those of remolded soils. The interaction between soil structure and mechanical behavior is a manifestation of structural mechanics effects. It is essential to understand the effects of secondary compressibility to predict long-term foundation deformations. The effects of soil composition on secondary compression deformation are little studied, and the soil structure is rarely involved in the compression process. The sedimentary environment creates the initial composition and structure of soft soil, and it also basically determines its grain size and mineral composition, while different depths give soft soil different overburden pressures, and the soil composition and depth directly affect its yield stress during compression. So, natural sedimentary soft soils sampled at different depths and from different sedimentary environments (such as marine-neritic facies, sea shore facies and limnetic facies) were selected to study the influence of structure on the secondary compression coefficient Cα during pressure change and the relationship between soil composition and Cα. One-dimensional compression and consolidation creep tests were carried out on undisturbed and remolded samples. The undisturbed samples were obtained by the thin-wall samplers in rotary wash borings, and the quality of the samples met the test standard. Based on the concept of the void index Iv and the intrinsic compression line (ICL) proposed by Burland, the role of structure in the compression process was studied, and the influence of soil composition and structure on secondary compression characteristics was summarized. The Cα/Cc values are 0.031, 0.034, 0.030, and 0.036 for Shanghai, Tianjin, Suzhou, and Ningbo soft soils, respectively, within the range of inorganic clays and silts (0.04 ± 0.01) given by Mesri. According to the compression index Cc obtained by compression test, Cα/Cc can be used to estimate Cα. The yield stress of normal consolidated soil is near pre-consolidation pressure, while that of structural soft soil is greater than its pre-consolidation pressure. Natural sedimentary soft soils show over-consolidation characteristics due to the action of the structure; the soil structure resists the external load and hinders secondary compression. When the soil structure is almost destroyed, the pressure reaches the structure full yield stress P′. The tests of structural soft soils show that Cα changes with pressure before the structure completely yields, first increasing and reaching peak Cαmax near P′; the value of P′ is approximately 1.6–3.0 σ’k, where σ’k refers to the structure yield stress of soil obtained by the Casagrande method. After the structure disappeared, Cα gradually decreased and then stabilized, which is considered to be independent of the load. The Cαmax is positively correlated with the liquid limit, indicating that the peak value that can be reached by the Cα is related to the maximum content of bound water in soft soil, thus the soil composition has a significant influence on secondary compressibility, which contributes to the prediction of long-term foundation deformation.
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Imatali, kyzy K., and A. Tilekova. "Study of the Chemical Composition of Soil in the Natural-Technogenic Territory Aidarken." Bulletin of Science and Practice, no. 11 (November 15, 2023): 115–18. http://dx.doi.org/10.33619/2414-2948/96/15.
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The article presents the results of an analysis of the content of microelements in the soils of the biogeochemical territory of Aidarken. Soil samples for analysis were taken from the top layer of soil cover (0-20 cm) at 3 points in the study area. Chemical analyzes for fertility elements (gross content of nitrogen, phosphorus and potassium, humus, absorption capacity, carbonate content, pH) and analysis for mechanical composition were carried out in the laboratory of the Republican Soil-Agrochemical Station of the Kyrgyzgiprozem State Research Institute under the Ministry of Agriculture and Mineral Resources of the Kyrgyz Republic. The soils of the studied areas belong to the following types: dark Turanian gray soils and mountain brown dry-steppe soils. Antimony, as an accompanying element of mercury, is above the maximum permissible concentration in all areas of the soil cover. High concentrations of individual heavy metals (Pb, Cu, Zn) were found in the tailings area.
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Kaypnazarov, Jandos Jumambetovich Atoev Baxtiyor Kuldashevich Kuchakov Abduvali Jabborovich. "THE IMPACT OF NUTRIENT ELEMENTS ON THE MECHANICAL COMPOSITION, WATER-PHYSICAL PROPERTIES AND MELIORATIVE STATUS OF IRRIGATED MEADOW BROWN AND MEADOW SOILS." JOURNAL OF AGRICULTURE & HORTICULTURE 3, no. 5 (2023): 104–11. https://doi.org/10.5281/zenodo.7990019.
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Soils are diverse in terms of type and composition. Under the influence of various factors (fertilizers, irrigation, etc.), soil properties can change. Soil fertility depends more on the nutrients added to the soil during tillage. The demand for organic food production is increasing, which requires a revival of the practice of using organic fertilizers, including non-conventional fertilizers. One of these organic amendments is compost made from waste and plant residues. In this research, we investigated the effect of compost ratio and amount on the physicochemical properties of irrigated meadow-brown and irrigated grassland soils. The relevance of the topic is that the mechanical composition, water-physical properties and meliorative condition (used fertilizers) of irrigated meadow-brown and grassland soils studied in the research were influenced by nutritional elements.
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Aldoshin, N. V., A. S. Tsygutkin, and L. A. Nemenushchaya. "Accelerated Decomposition of Plant Residues in Soils of Different Mechanical Composition." Machinery and Equipment for Rural Area, no. 2 (February 24, 2025): 21–25. https://doi.org/10.33267/2072-9642-2025-2-21-25.
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The article deals with the issues of providing extended reproduction of soil fertility by increasing the humus content due to decomposition of plant residues and biomass of green manure along with the use of fertilizers. Decomposition processes can be accelerated by using biological preparations - destructors in aerobic conditions, when plant residues and green manures treated with a destructor and embedded in the soil should be in the surface layer of the soil.
27
Baryła, Anna, and Leszek Hejduk. "The effect of plant cover on the mechanical composition of eroded soil." Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation 42, no. 2 (2010): 241–47. http://dx.doi.org/10.2478/v10060-008-0082-6.
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The effect of plant cover on the mechanical composition of eroded soil Water erosion causes migration of the finest soil particles and chemical compounds. The paper attempts to compare the mechanical composition of sediments susceptible to water erosion on the hillslopes with different cover crops. The research was conducted on the experimental plots in Puczniew. Its results showed that the composition of the sediment washed out from the fallow land significantly differed from that washed out from the plots with grass and barley crops. In the case of fallow land, soil particles were markedly larger. This might indicate the existence of a very hard mineral fraction.
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Kvashuk, A. V. "Changes in the mechanical properties of sandy soils subjected to contamination with petroleum products." Вестник гражданских инженеров 20, no. 3 (2023): 33–43. http://dx.doi.org/10.23968/1999-5571-2023-20-3-33-43.
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The article presents an analytical review of existing published studies of domestic and foreign authors on the change in the mechanical properties of sandy soils as a result of contamination with oil or various types of oil products during the operation of oil industry facilities. The author analyzes the changes of such mechanical characteristics of sandy soil as specific adhesion, internal friction angle and deformation modulus depending on the type of pollutant and its percentage (concentration) in the soil composition.
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Shevchenko, V. M. "Peculiarities of clay soils research in the course of forensic soil examination." Bulletin of Kharkiv National University of Internal Affairs 106, no. 3 (2024): 247–54. http://dx.doi.org/10.32631/v.2024.3.21.
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Methods of clay soils research that take into account the specifics of expert study of soil objects are defined. In order to classify a soil as clay, the mechanical composition is first examined. According to this indicator, clay soils are divided into loam, light clay, and heavy clay. Clay is classified as a mineral resource of national importance, while loam is classified as a mineral resource of local importance. These soils may be subject to illegal mining. The article analyses the possibilities of applying various methods for the expert study of clay soils, namely, the method of sedimentation analysis and the ‘field’ method. After establishing the mechanical composition and classification of samples as clay soils, it is recommended to determine the plasticity index, according to which the soils are classified as loams or clays. The analysis is described in accordance with the State Standard of Ukraine Б B.2.1-17:2009 “Bases and foundations of buildings and structures. Soils. Methods of laboratory determination of physical properties”. It is shown that in the course of forensic soil examination, the use of the “field” method in combination with the determination of the plasticity number allows soil samples to be classified as clay soils without the need for a long sedimentation analysis. The proposals presented in this article may be useful for selecting effective expert methods for the study of clay soils during the forensic examination of materials, substances and products in the expert speciality 8.8 “Soil Research”.
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Blaschuk, N., I. Maevska, and M. Goncharuk. "USE OF ASSEMBLY ASH IN THE COMPOSITION OF SOIL CEMENT." Modern technology, materials and design in construction 29, no. 2 (2021): 51–65. http://dx.doi.org/10.31649/2311-1429-2020-2-51-65.
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Іn this work, we searched for the optimal composition of soil cement containing different percentage of ash removal: from minor additives to the replacement of half the soil mass for ash. The search for the optimal composition was performed on the basis of experimental studies to determine the physical and mechanical characteristics.The use of soil cement with the addition of fly ash is proposed for the reinforcement of the bases by vertical reinforcing elements. In order to develop practical recommendations on the optimal composition of soil cement, a mathematical simulation of the work of reinforced soil cement fields was performed with the variation of the physical and mechanical characteristics of piles, depending on the ash content of the ash. . Plaxis software was used for numerical simulation. With a steady step of reinforcing elements, the properties of the soil-cement mass were studied, depending on the deformability of the piles.
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Seregin, N. G., and V. I. Zaprudnov. "Optimal composition test of cement primers in pile foundation construction by boriing and mixing method." Forestry Bulletin 25 (October 2021): 106–10. http://dx.doi.org/10.18698/2542-1468-2021-5-106-110.
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The analysis of soil structures in the territory of Western Siberia of the Russian Federation is given. The conditions of soil extraction for the construction of foundations are considered. The expediency of using loess soils for the construction of pile foundations with the use of cement primers is justified. The purpose of the work is formulated. A method for evaluating the physical and mechanical properties of soils for the construction of pile foundations by drilling and mixing method is considered. The main indicator of the soil for achieving this goal, which is a measure of its fragility, is determined. The curve of the dependence of the stress in the soil material on the deformation is considered and analyzed. The physical parameters of loess-like soils of various territorial regions of the Russian Federation are studied. Recommendations for the formation of the optimal composition of the soil for strengthening it with cement in the construction of pile foundations by drilling and mixing method are given.
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Gazze, S. A., I. Hallin, G. Quinn, et al. "Organic matter identifies the nano-mechanical properties of native soil aggregates." Nanoscale 10, no. 2 (2018): 520–25. http://dx.doi.org/10.1039/c7nr07070e.
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Variations at the nanoscale in soil and organic matter distribution are critical to understanding the factors involved in soil composition and turnover. Atomic Force Microscopy describes soil physical and topographical properties at the nanoscale, and thus represents an important tool in soil nanoscience.
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Khirk, A. V., D. D. Khaidapova, D. V. Karpova, and R. D. Petrosyan. "Aggregate structure of agro-gray soils of Vladimir Opolye: composition and strength of aggregates." Dokuchaev Soil Bulletin, no. 120 (September 25, 2024): 107–35. http://dx.doi.org/10.19047/0136-1694-2024-120-107-135.
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A complex of soils characteristic of the Vladimir Opole region was studied: agro-gray typical deep-arable soil, tongue-shaped agrozem and agro-gray gleyic soil. The high contrast of soil properties, which is due to the genesis of field landscapes, can be traced in the differences in the arable and subarable horizons of agro-gray soils at the aggregate and microaggregate levels. The soils have an excellent structural condition, high water resistance and mechanical strength of aggregates. In the aggregate structure of arable horizons, dependences on the position in the relief were found: down the slope the content of agronomically valuable aggregates decreases, the weighted average diameter of aggregates increases, the water resistance of aggregates and the mechanical strength of aggregates at capillary saturation decreases. However, the distribution and size of microaggregates, as well as the strength of aggregates in an air-dry state, reflects the complex genesis of the landscape and retains the influence of paleorelief with depressions and elevations. The weighted average diameter of microaggregates of arable horizons of the soils of the Vladimir Opole region is close to the chernozems of the Kursk region. The granulometric composition of the studied soils is typical of Vladimir Opolye soils and close to each other. In accordance with the classification of N.A. Kachinsky arable horizons are medium loamy, coarse silt, BT horizons are heavy loamy, coarse silt. The most structural is the arable horizon of agro-gray typical deep-arable soil, it has large microaggregates, it also has high water resistance and the highest content of agronomically valuable aggregates. The most homogeneous in terms of aggregate composition is tongue-shaped agrozem; the average diameter of aggregates and microaggregates in the arable and subarable horizons are equal and similar in the content of microaggregates and agronomically valuable aggregates. This soil is also highly water resistant. Agro-gray gleyic soil contains fewer agronomically valuable aggregates and its water stability is unsatisfactory.
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Stefanova, V., and P. Petrov. "Methodology for assessing of the restoration processes in reclaimed areas disturbed by polymetallic ore mining." IOP Conference Series: Materials Science and Engineering 1264, no. 1 (2022): 012004. http://dx.doi.org/10.1088/1757-899x/1264/1/012004.
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Abstract The present study develops a methodology for assessing the restoration processes in recultivated lands, disturbed by polymetallic ore mining. The methodology classifies the recultivated lands into four classes based on the recovery coefficient and the threat coefficient introduced through it. The coefficients are calculated for three groups of indicators - soils (formation of soil profile, mechanical composition, soil fertility), microflora (qualitative and quantitative composition), lack of threats (total pollution with heavy metals and metalloids, salinization, and acidification) relative to the studied site and a pre-selected reference site with similar characteristics.
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Juliev, M., B. Matyakubov, O. Khakberdiev, et al. "Influence of erosion on the mechanical composition and physical properties of serozems on rainfed soils, Tashkent province, Uzbekistan." IOP Conference Series: Earth and Environmental Science 1068, no. 1 (2022): 012005. http://dx.doi.org/10.1088/1755-1315/1068/1/012005.
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Abstract The problem of soil protection from erosion is relevant for many countries in the arid zone of the world, including the territory of Uzbekistan. In the republic, the main arrays of crops are located on rainfed lands, where the crop is created only due to moisture in precipitation. The amount of porosity (duty cycle) of soils is determined mainly by specific and bulk mass, mechanical composition, and humus content. Porosity of soils decreases from unwashed soils to washed away and down the profile. In the arable horizons of unwashed rainfed soils, it is 52%, washed out - 47.49%. Deeper in the profile, in horizons transitional to soil, due to a sharp increase in density and a decrease in the humus content in all soils, regardless of erosion, Porosity sharply drops to 48-50%. Thus, with a small bulk mass, the overall porosity of rainfed typical serozems is generally satisfactory, since it provides good soil aeration and the use of precipitation, only on highly washed away soils the porosity decreases markedly and the absorption of precipitation is slightly worsened.
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Mohd Pauzi, Nur Irfah, AlShaikh Muzil Wasel, Zakaria Che Muda, Mohamed Ahmed Hafez Ahmad, and Mohd Shahril Mat Radhi. "Comparison of Mechanical Properties of Compacted Waste Soil from Open Dumping Area and Clay Soil for Future Development." MATEC Web of Conferences 400 (2024): 02002. http://dx.doi.org/10.1051/matecconf/202440002002.
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Estimating the mechanical properties of soil samples involves analysing properties such as shear strength, density, and moisture content. It is important to use consistent and standardized testing methods, as well as to normalize the data to the same volume or weight, when comparing soil mechanical properties. Evaluating multiple properties will provide a more complete understanding of the differences between soils. Additionally, it is crucial to consider factors such as soil composition, history, and location when comparing soil properties. The main purpose of this paper is to compare the two types of soil which are waste soil and clay soil. Waste soil tends to have weak structure due to the multiple content of waste while clay soil is weak because of water absorption of in the clay structure. These two properties will have implications in terms of its mechanical properties. The experimental works that was conducted in this research are direct shear stress, density, water content and compressive strength. Clay soils tend to be less dense due to their fine-grained nature and the small size of their particles. Waste soil, on the other hand, can vary in density and can often be less dense than natural soils due to the presence of large void spaces. The water content in clay soils can significantly affect its shear strength, as excessive water can weaken the cohesive forces between the clay particles. In waste soil, the moisture content can affect the density and compaction of the soil, which can impact its stability. The expected outcome from this research is the conclusion of the mechanical properties for both types of soil.
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Marschalko, Marian, Işık Yilmaz, Lucie Fojtová, Karel Kubečka, Tomáš Bouchal, and Martin Bednárik. "Influence of the Soil Genesis on Physical and Mechanical Properties." Scientific World Journal 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/454710.
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The paper deals with the influence of soil genesis on the physical-mechanical properties. The presented case study was conducted in the region of the Ostrava Basin where there is a varied genetic composition of the Quaternary geological structure on the underlying Neogeneous sediments which are sediments of analogous granulometry but different genesis. In this study, 7827 soil samples of an eolian, fluvial, glacial, and deluvial origin and their laboratory analyses results were used. The study identified different values in certain cases, mostly in coarser-grained foundation soils, such as sandy loam S4 (MS) and clayey sand F4 (CS). The soils of the fluvial origin manifest different values than other genetic types. Next, based on regression analyses, dependence was proved neither on the deposition depth (depth of samples) nor from the point of view of the individual foundation soil classes or the genetic types. The contribution of the paper is to point at the influence of genesis on the foundation soil properties so that engineering geologists and geotechnicians pay more attention to the genesis during engineering-geological and geotechnical investigations.
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Wu, Lei, Qing Ling Ju, Hong De Wang, Jian Qing Wu, and Chao Li. "Study on Physical Characteristics and the Optimal Moisture Content Control Technology of Compacted Silt Subgrade." Applied Mechanics and Materials 353-356 (August 2013): 2908–12. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.2908.
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Through field test, physical and mechanical properties, mechanical composition, characteristics and compaction properties of the Yellow River alluvial silt soil were analyzed. The result shows that silt inside air compaction was difficult to discharge due to the influence of soil particle composition and low content of clay. As a result, the uneven settlement deformation of subgrade is obvious and the stability of silty soil water is not enough. The rainfall is frequent. Moisture content of soil is too high. It is difficult to dry field soil. The construction period is short. In order to speed up the pace of construction, we proposed the over-wet silt optimal multiple water control technology.
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Basova, E. V., N. V. Lukina, A. I. Kuznecova, et al. "QUALITY OF WOOD LITTER AS AN INFORMATIVE INDICATOR OF FUNCTIONAL CLASSIFICATION OF FORESTS." FOREST SCIENCE ISSUES 5, no. 3 (2022): 1–21. http://dx.doi.org/10.31509/2658-607x-202252-113.
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Relevance and goals. In the context of global climate change, the climate-regulating function of forests deserves special attention. There is still no functional classification of forests according to the effectiveness of their carbon storage function. The purpose of this article is to discuss an approach to such classification based on the assessment of the quality of tree litter. Objects and methods. To test the approach to the identification of functional types of forests (FTL) based on the quality of tree litter, taking into account the position in the landscape and the mechanical composition of soil-forming rocks, data on soils and vegetation obtained at 23 sites operating in the subzone of coniferous-broadleaf forests of the European part of Russia on the territory of Bryansk Polesie and Moskvoretsko-Okskaya plain were used. For indirect (on the ecological scale of E. Landolt using the SpeDiv program) to assess differences in the soil richness of forests belonging to different FTLS, the species composition of 160 descriptions of forest vegetation of the Moscow, Bryansk, Smolensk, Kostroma regions, Krasnodar Krai and the Republic of Adygea (North-Western Caucasus) was analyzed. Results. Examples of functional forest types (FTL) for coniferous and broad-leaved forests of the European part of Russia are given. The differences in the level of soil carbon accumulation between different FTLS are shown, and a preliminary assessment of the influence of the position in the landscape and the mechanical composition of soils on the accumulation of carbon in soils within FTLS is given. Conclusion. Based on the quality of the fall of tree litter, 15 FTL were identified, which are confirmed by examples based on geobotanical descriptions of forest communities common in the zone of coniferous-deciduous forests of the European part of Russia and in the belt of coniferous-deciduous forests of the North-Western Caucasus. The validity of the allocation of FTL for the efficiency of carbon accumulation in soils based on the quality of plant litter, taking into account the influence of “external factors” (the position in the landscape and the mechanical composition of soil-forming rocks) is confirmed by data obtained at 23 sites; estimates of the carbon reserves in the soil, as well as the soil richness estimated on an ecological scale, revealed differences between the allocated FTLS. Differences in carbon stocks in forest ecosystems in the same FTL formed on loamy and sandy loam soil-forming rocks were revealed. Differences in soil carbon reserves in forests belonging to the same FTL, but formed at different positions in the landscape, have been confirmed; in transit landscapes, soil carbon reserves are higher than in autonomous ones.
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Maftuna, Orazaliyeva. "SOME FACTORS AFFECTING THE FERTILITY OF IRRIGATED SOILS." American Journal Of Agriculture And Horticulture Innovations 4, no. 6 (2024): 7–10. http://dx.doi.org/10.37547/ajahi/volume04issue06-02.
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This article provides information on soil fertility, mechanical composition, general physical properties, and classification by erosion level. Erosion processes influence soil fertility and, in turn, soil agronomic properties.
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Lovtskaya, Olga V., Alexey V. Kudishin, and Anastasiya B. Golubeva. "USING SPATIAL DATA TO SIMULATE RAIN RUNOFF." Interexpo GEO-Siberia 4, no. 1 (2021): 167–76. http://dx.doi.org/10.33764/2618-981x-2021-4-1-167-176.
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The paper presents the main stages of spatial data preparation for computer models of runoff formation by the example of the Charysh River basin. DEM was employed to construct a system of sub-basins and a hydrological graph as well as to calculate morphometric characteristics of its elements. Sources of data on vegetation and mechanical composition of soils are given Using the Harmonized World Soil Database and the soil map of Altai Krai, a map of soil texture (grain-size composition) of the Charysh River basin was created. Two ways of precipitation accounting (the weather station data; the Persiann-CDR data set) were compared. Calculations of runoff from the the Charysh catchment were made for two models.
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Vlček, V., L. Pospíšilová, and P. Uhlík. "Mineralogy and chemical composition of Cryosols and Andosols in Antarctica." Soil and Water Research 13, No. 2 (2018): 61–73. http://dx.doi.org/10.17221/231/2016-swr.
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Variations in mineralogical and elemental composition of Turbic Cryosol (King George Island and James Ross Island), Skeletic Cryosol (J. Ross Island, the Trinity Peninsula), Leptic Andosols (Deception Island), and Skeletic Andosols (Deception Island) were studied. Significant differences in mineralogical composition in size fraction, vertical and horizontal position were determined by X-ray diffraction quantitative analysis. The differences were attributed to a variable degree of chemical weathering process. As a product of weathering were defined montmorillonite, chlorite, microcrystalline polymorphous silica, Fe oxides, and oxyhydroxides. Their content was increased towards the surface and in a finer fraction. Crystal thickness and size distribution of montmorillonite was measured by the Bertaut-Warren-Averbach technique and the results confirmed higher intensity of chemical weathering in Turbic Cryosols (J. Ross Island and King George Island). Feldspars and volcanic glass were the main phases found in soil samples from Deception Island. They were determined as phases of parent rock and indicated low intensity of chemical weathering. Clinoptilolite was identified in soil samples from J. Ross Island and Deception Islad and its hydrothermal origin was supposed. Soil (sample AP) from Base General Bernardo O’Higgins Riquelme had significantly higher content of phosphate minerals, which was a result of ornithogenic activities. Macro elements content was consistent with mineralogical analyses. Turbic Cryosols were rich in iron, aluminium, magnesium, and manganese (> 2%). Skeletic Cryosols contained also iron, aluminium, magnesium, manganese, calcium, and sulphur (> 1%). Leptic Andosols were rich in iron and aluminium (> 2%). Soil properties and humic substances quality were evaluted. Results of chemical and physical analyses indicated that poorly developed soils of Antarctica varied in acidity, conductivity, humus content, and texture. Humic substances content and quality were low. Mainly mechanical (physical) and chemical weathering processes played major role in the soil development accompanied by low intensity of biological activity.
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Kobylina, Tatyana, Bekzat Tynybekov, Akmaral Nurmahanova, et al. "CURRENT SOIL STATE OF POPULATIONS OF SEDUM HYBRIDUM L. AND SEDUM EWERSII LEDEB. FOUND IN THE ZAILIY ALATAU." Eurasian Journal of Ecology 79, no. 2 (2024): 100–109. http://dx.doi.org/10.26577/eje.2024.v79.i2-09.
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The article describes the natural soil conditions of Sedum hybridum L. and Sedum ewersii Ledeb—populations area based on the results of field and laboratory soil studies of soils. Soil types, morphological features, chemical composition, nutrient elements, amount of humus, absorbed bases and salt composition, and mechanical composition of soils are determined. The following soil types were identified during field studies: Kokzhailau Gorge (population 1) – chernozem, Turgeni Gorge (population 2) – chernozem, near Kastek River (population 3) – chestnut soil. The humus content in the 0-80 cm layer of chernozem (population 1) of Kokzhailiau gorge is very high, ranging from 5.55-12.81%, the reaction of the soil medium is within pH 7.10-7.40, i.e. CO2 content ranges from 0.16 to 0.34. On chernozems of Turgeni gorge (population 2) humus content in 0-60 cm layer is very high, within 5.90-20.88%, reaction of soil medium within pH 6.15-7.07, amount of CO2 within 0.21-0.34. On chestnut soils near the Kastek River (population 3), the humus content in the 0-73 cm layer was in the range of 1.57-6.92%, the pH ranged from 7.13-8.23, i.e. it was alkaline, the CO2 content was in the range of 0.16 - 0.34. The composition of salts in the chernozems of the Kokzhailau gorge: CO3 - not detected; HCO3- - 0,24- 0,48 ; Cl- – 0.04; CO4- – 0,12-0,92; Sa+ – 0,29-0,49; Mg 2+ – 0,20-0,98; Na+ – 0,05-0,06; To+ – 0,05-0,23; The amount of salts is 0.060-0.083%. It was found that the soils of all 3 populations are not saline, since the amount of salts does not exceed the salinity limit.
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Opekunova, Marina, Anatoly Opekunov, Stepan Kukushkin, and Sergey Lisenkov. "Chemical composition of soil waters in oil and gas production areas of north of Western Siberia." E3S Web of Conferences 163 (2020): 05011. http://dx.doi.org/10.1051/e3sconf/202016305011.
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This study describes the changes in the chemical composition of soil waters under the influence of natural and anthropogenic factors in the area of development of oil and gas condensate fields in the north of Western Siberia. The concentration of chemical elements (Na, K, Ca, Cu, Zn, Fe, Pb, Cd, Ni, Co, Cr, Ba, Sr, Cd, and Mn) in soils, ground and soil waters was determined. Pollution of soil water and soil is local in nature and it is characteristic of areas located in the immediate vicinity of industrial facilities. A set of indicators is proposed for assessing the transformation of natural complexes under the influence of oil and gas production. The increased pH values, concentrations of petroleum hydrocarbons, nitrates, chlorides, sodium, potassium, calcium, barium, strontium, iron and manganese, as well as zinc, vanadium, cobalt and nickel are observed. In the impact zones in soil waters and soils. Mechanical disturbances of the soil and vegetation cover lead to an increase in defrost, secondary waterlogging and are accompanied by an increase in the migration of chemical elements in the catenary structure of landscapes.
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Gerasimov, A. U., A. A. Lavrusevich, and I. A. Lavrusevich. "COMPOSITION AND PROPERTIES OF SOILS OF MODERN ANTHROPOGENIC GEOLOGICAL BODIES FORMED UNDER AGRO AMELIORATION CONDITIONS." Gruntovedenie 1 (2024): 44–56. http://dx.doi.org/10.53278/2306-9139-2024-1-22-44-56.
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The article analyzes the results of the study of properties of modern technogenically transformed alluvial soils within the framework of the construction of highway A 289 (Krasnodar region). Of particular interest are the soils occurring in the upper part of the geological section, the structural and textural features of which were changed under the influence of technogenic load of the territory. The results of granulometric and mineral composition of soils, physical mechanical properties of soils were obtained and analyzed during the study of soils. The results of the analysis revealed the convergence of the conditions of formation of soil properties in the upper part of the studied soil strata, which allows us to attribute them to modern technogenic geological bodies formed under agromelioration conditions.
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Yeleuov, Baglan, Nurbol Yerish, Niyazbek Kalimov, and Nurlan Mukhtarov. "ANALYSIS OF BACTERIAL DIVERSITY OF SOILS TREATED WITHMINIMAL AND ZERO SOIL TECHNOLOGIES." 3i intellect idea innovation - интеллект идея инновация 4 (2024): 89–95. https://doi.org/10.52269/22266070_2024_4_89.
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Two tillage systems were studied in crop rotation: Minimal technology. The use of a Glyphosate non-selective herbicide herbicide in a fallow in the first half of summer and mechanical tillage in the second half. Application of combined tools on grain fields within crop rotation, excluding autumn treatments. Zero soil technology. Mechanical tillage is completely excluded. Only direct seeding is performed using stubble drills equipped with hoe boots. Weed control in fallow fields is performed using exclusively the Glyphosate non-selective herbicide. In all crop rotation fields, spring soft wheat of the Omskaya 18 variety was sown, with a seeding rate of 3.5 million viable seeds per hectare. Objective: To perform a comparative analysis of the diversity of 16S rRNA gene fragment sequences, amplified from metagenomic DNA, to determine the composition and structure of the soil bacteriobiome, comparing minimal and zero soil tillage technologies. Task: For each sample, analyze the dependency between the number of identifiable OTUs and the total number of sequences to assess the feasibility of accurately comparing the bacterial biodiversity of the samples. The evaluation of soil bacteriobiome composition and structure under different tillage methods revealed the main components of the bacteriobiome and their contributions.
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Loza, I. M., and O. Y. Pakhomov. "Ecosystem approach to the assessment of land reclamation on the example of Zaporizhzhskiy manganese ore quarry." Fundamental and Applied Soil Science 19, no. 1 (2019): 34–38. http://dx.doi.org/10.15421/041907.
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Mining industry is the one of the powerful factors leading to the degradation of native ecosystems. Disturbed ecosystems developed instead the native may be remediated using certain reclamation techniques. The purpose of this work was assessment of the remediation quality within Ordzhonikidze Ore Mining and Processing Integrated Plant on the possibility of their economic use and suitability for the existence of soil biota, as well as providing recommendations for further rational economic use. Technical remediation of the surveyed area included such stages as removal of topsoil with gross method, followed by its storage in piles; reformation and levelling of overburden above-ore dump disposed in the exhaust space of career by gross way; keeping of levelled rocks up to 3 years with the purpose of their subsidence; surface repair after subsidence; application of humic layer; ploughing of reclaimed lands. Assessment of soil quality was carried out by comparing a quality score of reclaimed soils with a quality score of zonal soil. Data collection and processing were carried out on values of humus layer thickness; humus content in filling top layer; content of physical clay in topsoil and subsoil; granulometric composition of one-meter thick fill layer; topsoil and subsoil salinity; composition and properties of underlying rocks. As a result of mining operations, topsoil of remediated soil is depleted in chemical elements necessary for plant growth; as a result, the soil becomes more calcareous, and contains humus 1,5–2 times less than that in topsoil of undisturbed soil. Topsoil thickness is on average 58 cm. Humus content in the filled layer on average is 2.2%. Mechanical composition of the arable layer is middle loamy. The soil is compacted below the plow pan. Mechanical composition of the underlying rock is fine-textured. Salinization with water-soluble salts above the toxicity threshold in the arable layer of the studied soils was not found. Before agricultural use of reclaimed lands, it is essential to repair it with the techniques of biological reclamation. This is achieved through cultivation of salt-resistant perennial grasses for 3–5 years.
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Чалова and Olga Chalova. "Water permeability of frozen ordinary chernozem and light-brown soils of the Lower Volga region under the influence of potassium carbonate." Forestry Engineering Journal 4, no. 2 (2014): 105–9. http://dx.doi.org/10.12737/4512.
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Following results were obtained: soil permeability is directly related to the mechanical composition, soil pore size, moisture content and temperature of the frozen soil, the presence of "barrier layer." Water infiltration into frozen soil is significantly lower than in the thawed one. In all test samples linear dependence of defrost time and the percentage of thawed soil from the amount potassium carbonate was defined. The dependence of the amount of thawing time on frozen soil volume is defined. The optimum pH value of the solution of potassium carbonate, permissible to use on light-brown soils and ordinary chernozems is revealed.
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Prasetia, Irfan, Hutagamissufardal Hutagamissufardal, Ahmad Jimmy, and Muhammad Dhiya Khairi Ananda. "Experimental investigation on the properties of Borneo soft soil stabilized with industrial waste." International Journal of Engineering and Management Sciences Online first (December 7, 2023): 1–13. http://dx.doi.org/10.21791/ijems.2023.040.
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This research aims to investigate the physical and mechanical properties of soft soil stabilized using industrial wastes, namely fly ash and rice husk ash. For this purpose, 6 (six) variations in the composition of fly ash (F), lime (L), and rice husk ash (R) were prepared. The variations in sample composition are SFLR1 (F: 15%, L: 2.5%, R: 5%), SFLR2 (F: 20%, L: 2.5%, R: 5%), SFLR3 (F: 25%, L: 2.5%, R: 5%), SFLR4 (F: 15%, L: 5%, R: 10%), SFLR5 (F: 20%, L: 5%, R: 10%) and SFLR6 (F: 25%, L: 5%, R: 10%). Meanwhile, soft soil was obtained from Banjarmasin City in South Borneo. The sample's physical properties were analyzed using the Atterberg limit test. Moreover, the California Bearing Ratio (CBR) and direct share tests are conducted to assess the sample's mechanical properties. The research results can provide confidence that fly ash, lime, and rice husk ash have the potential to improve the physical and mechanical properties of Borneo soft soil. The results of the Atterberg limit test show that industrial wastes can lower the liquid limit and increase the plastic limit; thus, the soil plasticity index decreases. As for the CBR test results, the untreated soft soil bearing ratio value of 1.4% can be increased to 2.6% after being treated with industrial wastes. In addition, using industrial wastes also decreases the swelling of the soil. Moreover, it can be seen that greater use of fly ash can improve the mechanical properties of the soft soil. However, increasing the composition of lime and rice husk ash can reduce the mechanical properties of the soft soil. Based on the experimental results, it is proposed to use SFLR3 as soil stabilization mixtures.
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Turdimetov, Shakhobiddin M., and Mokhinur M. Musurmanova. "PROPERTIES OF SOILS LOCATED IN DIFFERENT GEOMORPHOLOGICAL CONDITIONS." American Journal Of Agriculture And Horticulture Innovations 02, no. 11 (2022): 1–6. http://dx.doi.org/10.37547/ajahi/volume02issue11-01.
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Soil properties can vary to some extent depending on the geomorphological conditions in which they are located. This is due to the diversity of parent rocks, layering and mechanical composition of the soil. The article presents and compares the properties of irrigated gray-meadow, meadow and marsh-meadow soils located on terraces I, II, III of the Syrdarya River. Based on the results obtained, recommendations are given for the rational placement of plants.