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Статті в журналах з теми "Crushed sandstone"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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1

Jiang, Ning, Dawei Yin, Junbiao Ma, Liu Han, Haiyang Pan, and Qian Yin. "Effects of Water Immersion on the Long-Term Bearing Characteristics of Crushed Gangue in Goaf." Geofluids 2021 (March 11, 2021): 1–11. http://dx.doi.org/10.1155/2021/6675984.

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To study the long-term bearing characteristics of crushed gangue in goaf under water immersion conditions, the creep test of the crushed gangue in the water immersion state was performed by using the self-developed large-scale deformation-seepage test system of crushed rock. The effects of the rock lithology, axial stress, and grain composition on the long-term bearing deformation characteristics and fractal characteristics of crushed gangue under water immersion were analysed. The results show that under certain conditions of axial stress and grain composition of the gangue, a greater uniaxia

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2

Chen, Yanlong, Bangyong Yu, Kai Zhang, Mingwei Zhang, Guang Xu, and Zhanqing Chen. "Permeability Evolution and Particle Size Distribution of Saturated Crushed Sandstone under Compression." Geofluids 2018 (2018): 1–12. http://dx.doi.org/10.1155/2018/6043420.

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In this research, the particle size distribution and permeability of saturated crushed sandstone under variable axial stresses (0, 2, 4, 8, 12, and 16 MPa) were studied. X-ray Computed Tomography results revealed that particle crushing is likely to occur considerably as the axial stress is approaching 4 MPa, which results in the change of pore structure greatly. During compression, the particle size distribution satisfies the fractal condition well, and the fractal dimension of particle size distribution is an effective method for describing the particle crushing state of saturated crushed san

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3

Casas, Lluís, Roberta Di Febo, and David Parcerisa. "Petrographic Markers for Archaeometric Identification of Montjuïc Sandstone, the Flagship Stone of Barcelona (NE Spain)." Minerals 10, no. 2 (2020): 154. http://dx.doi.org/10.3390/min10020154.

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The present study deals with a particular clastic rock from the Montjuïc hill exploited since Roman times in Barcino (present-day Barcelona (NE Spain)). Polarized and cathodoluminescence microscopies have been used to describe the main petrographic features of Montjuïc sandstones. Several characteristic provenance markers have been identified; among them the most specifically restricted to Montjuïc sandstone are the K-feldspar clasts with authigenic overgrowths. A petrographic survey oriented to the detection of such markers has been fruitfully applied to sculptures, architectural elements, mo

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4

Qiu, Zhenfeng, Ting Cao, Yongsuo Li, Junjie Wang, and Yulong Chen. "Rheological Behavior and Modeling of a Crushed Sandstone-Mudstone Particle Mixture." Processes 6, no. 10 (2018): 192. http://dx.doi.org/10.3390/pr6100192.

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A mixture of sandstone and mudstone particles is often used as the main filling material for many agriculture-related and civil engineering projects, including rock-fill dams and foundations. The long-term rheological deformation experienced by rock-fill dams and foundations filled with this mixture is much bigger than that of coarse-grained and cohesive soils, due to the deterioration and softening of the mudstone particles. This study focuses on the rheological deformation of a sandstone-mudstone particle mixture, prepared by mixing sandstone and mudstone particles, based on the content by w

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5

Ding, Qi-Le, and Shuai-Bing Song. "An Experimental Study of Seepage Properties in Crushed Sandstone and Mudstone." Advances in Civil Engineering 2019 (June 18, 2019): 1–9. http://dx.doi.org/10.1155/2019/6537571.

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To study the effects of compression rate and weight ratio of sandstone to mudstone on permeability, water flow tests were performed on crushed rocks using an in-house designed and built water flow apparatus. Seepage properties of sandstone and mudstone were tested on specimens under six axial displacement levels. The weight ratios of the six specimens of sandstone to mudstone were set to 1 : 0, 4 : 1, 3 : 2, 2 : 3, 1 : 4, and 0 : 1. A non-Darcy law was adopted to calculate the permeability in the experiments based on verification of the Reynolds number. Non-Darcy flow is found to be most signi

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6

WAJIMA, Takaaki, Kazuharu YOSHIZUKA, and Yasuyuki IKEGAMI. "Zeolite Conversion for Effective Utilization of Crushed Sandstone Waste." Journal of the Japan Society of Engineering Geology 47, no. 5 (2006): 292–96. http://dx.doi.org/10.5110/jjseg.47.292.

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7

Wang, Jun-Jie, Zhen-Feng Qiu, and Wen-Jie Deng. "Shear Strength of a Crushed Sandstone-Mudstone Particle Mixture." International Journal of Architectural Engineering Technology 1, no. 1 (2014): 33–37. http://dx.doi.org/10.15377/2409-9821.2014.01.01.4.

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8

Azam, Muhammad Rizwan, Isa M. Tan, Lukman Ismail, Muhammad Mushtaq, Muhammad Nadeem, and Muhammad Sagir. "Static adsorption of anionic surfactant onto crushed Berea sandstone." Journal of Petroleum Exploration and Production Technology 3, no. 3 (2013): 195–201. http://dx.doi.org/10.1007/s13202-013-0057-y.

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9

Scheurer, Christian, Rafael E. Hincapie, Elisabeth Neubauer, Astrid Metz, and Daniel Ness. "Sorption of Nanomaterials to Sandstone Rock." Nanomaterials 12, no. 2 (2022): 200. http://dx.doi.org/10.3390/nano12020200.

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We investigated the interaction of silica nanostructured particles and sandstone rock using various experimental approaches, such as fluid compatibility, batch sorption and single-phase core-floods. Diol and polyethylenglycol (PEG) surface-modified nanostructured silica materials were tested using two brines differing in ionic strength and with the addition of sodium carbonate (Na2CO3). Berea and Keuper outcrop materials (core plug and crushed samples) were used. Core-flood effluents were analysed to define changes in concentration and a rock’s retention compared to a tracer. Field Flow Fracti

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10

Fontanini, P. S. P., L. L. Pimentel, A. E. Jacintho, and C. L. Migliato. "Brazilian Geological Sandstone Characterization and its Utilization as Aggregate in Structural Concrete." Applied Mechanics and Materials 271-272 (December 2012): 141–46. http://dx.doi.org/10.4028/www.scientific.net/amm.271-272.141.

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The sandstone extraction is an essential activity to the production of specific products. It is employed in the civil construction sector. However, there is still a deficiency in physical and geological characterization. This research develops two experiments in the sandstone matrix located in São Carlos region (City of São Paulo State – Brazil). The first experiment is related to the geological aspect of the specific sandstone. It identified the geographic location and investigated the porosity and absorption rates of the Brazilian sandstone rock, besides verifying its compressive strength. T

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11

Stelmakh, Sergey A., Anatoliy I. Shuyskiy, Evgeniy M. Shcherban та Albert Yu Prokopov. "Efficiency Comparison of Fiber Reinforcement in Vibrated аnd Centrifuged Concretes at Different Types of the Applied Heavy Aggregate". Materials Science Forum 974 (грудень 2019): 288–92. http://dx.doi.org/10.4028/www.scientific.net/msf.974.288.

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The article considers and evaluates the impact of dispersed reinforcement of heavy concretes manufactured by means of vibration and centrifugation, various types of fibers on their strength-density ratio. The options of applying different types of heavy-weight aggregates for these concretes: crushed stone, limestone and sandstone are considered. The highest strength-density ratio is registered in centrifuged crushed stone fibrous concretes, and all types of centrifuged concretes has the ratio higher than vibrated concretes with the same composition of the studied fibers. The highest growth of

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12

Koukouzas, N., Z. Kypritidou, G. Purser, C. A. Rochelle, and C. Vasilatos. "GEOCHEMICAL MODELING FOR THE ASSESSMENT OF THE CO2 STORAGE POTENTIAL IN THE MESOHELLENIC TROUGH, NW GREECE." Bulletin of the Geological Society of Greece 50, no. 4 (2017): 2210. http://dx.doi.org/10.12681/bgsg.14277.

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Sandstone of the Pentalofos formation from the Mesohellenic Trough was examined as a potential reservoir for CO2 sequestration. Experiments were carried out into batch reactors for 6 months by mixing a simplified porewater solution saturated with CO2 (150 bar, 70oC) with crushed sandstone. The sandstone is mainly composed of carbonates, feldspars and quartz, and secondly of clays and phyllosilicates. Chemical analysis of aqueous samples showed an increase in the concentration of dissolved ions as the experiment progressed. Geochemical kinetic models that were constructed using the PHREEQC geoc

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13

Lesovik, V. S., E. V. Fomina, I. A. Cherepanova, and A. N. Ryapukhin. "Weathered quartite sandstones of the Kursk magnetic anomaly as a raw material for construction industry." Russian Automobile and Highway Industry Journal 19, no. 5 (2022): 728–37. http://dx.doi.org/10.26518/2071-7296-2022-19-5-728-737.

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Introduction. The features of composition and structure of quartzitic sandstones of the Kursk Magnetic Anomaly affected by weathering processes, which do not meet the requirements of normative documents for obtaining crushed rock, are considered. The reserves of these rocks have not been approved as minerals and are currently stored in the form of large-tonnage dumps on the territory of the plant.The main challenge to be solved within the framework of the work is aimed at solving the issue of expanding the raw material base of the construction industry.Materials and methods. Efficiency evaluat

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14

Wang, Jun-Jie, Hui-Ping Zhang, Ming-Wei Liu, and Di-Ping Deng. "Compaction behaviour and particle crushing of a crushed sandstone particle mixture." European Journal of Environmental and Civil Engineering 18, no. 5 (2014): 567–83. http://dx.doi.org/10.1080/19648189.2014.891469.

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15

Mohammed Jasim, Faris, and Ismael Azeez Mohammed. "Comparison of Full Crushed Aggregate (Harsh Mix of Sandstone) and Partially Crushed Aggregate on some Properties of HMA." Polytechnic Journal 12, no. 01 (2022): 135–40. https://doi.org/10.25156/ptj.v12n1y2022.pp135-140.

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Aggregate angularity has an important effect on the performance of HMA. More angular aggregates particles can increase the stone-on-stone interlocking and consequently reduce the permanent deformation. The performance of dense graded asphalt mixture is significantly influenced by the angularity, shape, and surface texture of aggregates. This study determines the effect of using Harsh aggregate (full crushed) and normal aggregate in asphalt mixture, and evaluates the volumetric properties of both mixtures. Marshall Test was carried out in order to assess the resistance of stability of mixtures.

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16

Ping, Qi, and Xiangyang Li. "Analysis of the Fracture Characteristics and Crack Propagation Mechanism of Fractured Sandstone under Dynamic Loading." Applied Sciences 14, no. 5 (2024): 2042. http://dx.doi.org/10.3390/app14052042.

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In order to study the impact of fracture thickness on the dynamic mechanical properties of rock specimens, impact compression tests on prefabricated sandstone specimens with different fracture thicknesses and intact specimens were carried out by using a split Hopkinson pressure bar (SHPB) test device, and the dynamic mechanical parameters of the fractured sandstone specimens were obtained. The results showed that the dynamic stress–strain curves of the prefabricated fractured sandstone specimens are similar to those of the intact sandstone specimens, which can be divided into three stages: ela

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17

Nesvetaev, G. V., Y. I. Koryanova, Elena Ivanchuk, and A. Gortsevskoy. "The Influence of the E-Modulus of Coarse Aggregate on the Stress-Strain Diagram of the Concrete with Frame Structure." Materials Science Forum 974 (December 2019): 299–304. http://dx.doi.org/10.4028/www.scientific.net/msf.974.299.

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The stress-strain diagrams of concrete with frame structure made with content of coarse aggregate from 0.56 till 0.64 m3/m3, with crushed granite (E-modulus = 71 GPa) and crushed silica sandstone (E-modulus = 42 GPa) are shown. It is shown that the stress-strain diagram of the concrete with frame structure made with coarse aggregate with E-modulus 42 GPa is almost linear over the entire loading range. Stress-strain diagram of concrete made with coarse aggregate with E-modulus 71 GPa has three zones. It is concluded that the concentration of intrastructural stresses under loading in the concret

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18

Hirsch, P., F. E. W. Eckhardt, and R. J. Palmer Jr. "Fungi active in weathering of rock and stone monuments." Canadian Journal of Botany 73, S1 (1995): 1384–90. http://dx.doi.org/10.1139/b95-401.

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Fungal colonization of sandstone and granite from Antarctica was studied. Granite from a church, sandstones from a monument and a courthouse in Germany, glazed bricks from a German cathedral, and some other stone types were also examined. All samples contained fungi and heterotrophic bacteria, often also cyanobacteria or algae. For cell counting and enrichment of microorganisms the samples were crushed aseptically, suspended in NaCl–Tween-80, plated on oligotrophic media, and incubated at 16–25 °C dark or in dim light. Total biomass was determined as phospholipid-bound phosphate (PLP). Rock sa

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19

CMSE, C., Huaquan YANG, Zhen LI, Meijuan RAO, and Xiaomei SHAO. "Study on Influence of Aggregate Combination and Inhibition Material ofAlkali-silica Reaction in Fully-Graded Concrete." Materials Science 26, no. 3 (2020): 363–72. http://dx.doi.org/10.5755/j01.ms.26.3.19451.

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The influences of aggregate combination and inhibitor additives on the Alkali-silica Reaction (ASR) were studied in this research. A long-term alkali activity simulation of fully-graded concrete also was carried out. The results showed that replacement of artificial sandstone sand with artificial marble sand reduced the alkali activity expansion rate of the sandstone aggregate and effectively improved the inhibition effect of the aggregate when mixed with 35 % fly ash. Activated silica in the fly ash was crushed into particles and was mixed into each part of the concrete system. It transformed

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20

Hydzik-Wiśniewska, Joanna, Anna Wilk, Łukasz Bednarek, and Sebastian OIesiak. "Mixture of Crushed- Stone Aggregate as Material For Substructure Layers." Studia Geotechnica et Mechanica 40, no. 2 (2018): 154–62. http://dx.doi.org/10.2478/sgem-2018-0014.

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AbstractOne of the most important elements of road construction is its substructure, which constitutes the base on which the next layers of road are placed. Mixture of crushed-stone aggregate is very often used as material for substructure. The most frequently used type of aggregate is magma rocks, due to its good physical-mechanical properties. However, it is not always available, so it is substituted by sandstone or even concrete rubble aggregates. The bearing ratio CBR is a parameter determining the suitability of a certain aggregate for road substructure. It is also one of the most popular

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21

Raza, Syed Shabbar, Julie Pearce, Pradeep Shukla, Phil Hayes, and Victor Rudolph. "Characterisation of Surat Basin Walloon interburden and overlying Springbok Sandstone: a focus on methane adsorption isotherms, permeability and gas content." APPEA Journal 60, no. 2 (2020): 748. http://dx.doi.org/10.1071/aj19078.

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The Surat Basin in Queensland is one of the world’s premier producers of natural gas from coal seams. We investigate the potential for clay-rich Walloon Coal interburden and the overlying Springbok Sandstone to hold or produce gas. Seventeen core samples were analysed from two wells from intervals within the Walloon Upper Juandah Coal Measures interburden and the Springbok Sandstone. Samples were characterised using high-pressure methane adsorption isotherms, canister gas desorption tests, moisture contents, ash contents, carbon contents, scanning electron microscopy/energy dispersive X-ray sp

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22

UZOH, U.E, and E.M MBADIKE. "Effect of Sandstone on Concrete Procedure With Plastic Synthetic Aggregate." International Journal of Engineering Works (ISSN: 2409-2770) 5, no. 2 (2018): 37–39. https://doi.org/10.5281/zenodo.1185213.

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In this research work, the effect of sandstone (SS) on concrete produced with plastic synthetic aggregate (PSA) was investigated. A mix proportion of 1:1.6:3.6 with water cement ratio of 0.50 were used. The percentage replacement of coarse aggregate (CA) with plastic synthetic aggregate and plastic synthetic aggregate/sandstone used were 0%, 5%, 10%, 20%, 30% and 40%. Concrete cubes of 150mmxl50mmxl50mm of CA/PSA and CA/PSA/SS were cast and cured at 3.7,28,60 and 90 days respectively. At the ends of each hydration period, the concrete cubes were crushed and their .compressive strength was dete

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23

Hanamertani, Alvinda Sri, Rashidah M. Pilus, Ahmad Kamal Idris, Sonny Irawan, and Isa M. Tan. "Ionic liquids as a potential additive for reducing surfactant adsorption onto crushed Berea sandstone." Journal of Petroleum Science and Engineering 162 (March 2018): 480–90. http://dx.doi.org/10.1016/j.petrol.2017.09.077.

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24

Wang, Jun-Jie, and Zhen-Feng Qiu. "Anisotropic hydraulic conductivity and critical hydraulic gradient of a crushed sandstone–mudstone particle mixture." Marine Georesources & Geotechnology 35, no. 1 (2015): 89–97. http://dx.doi.org/10.1080/1064119x.2015.1103825.

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25

Kara-sal, Boris K., Buyan O. Saaya, and Ailan Sh Saryglar. "GRANULAR THERMAL INSULATION MATERIAL BASED ON SANDSTONE OVERBURDEN ROCKS OF TUVA COAL MINING." News of higher educational institutions. Construction 766, no. 10 (2022): 23–30. http://dx.doi.org/10.32683/0536-1052-2022-766-10-23-30.

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On the basis of a charge consisting of a local dump sandstone overburden of coal mining and soda ash, as well as a poroformer from local limestone, porous granules with a volumetric bulk mass of 284 kg/m3, compressive strength of 1.6-1.8 MPa, thermal conductivity of 0.09 W/m °C were obtained. At the same time, porous granules that meet the requirements of GOST 9757-90 “Gravel, crushed stone and sand. Artificial porous materials” are obtained from a charge containing 70 % of the main raw material, 25 % of soda and 5 % of carbonate component. The resulting material is considered as an effective

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26

Wang, Jun-Jie, Zhen-Feng Qiu, Wen-Jie Deng, and Hui-Ping Zhang. "Effects of Mudstone Particle Content on Shear Strength of a Crushed Sandstone–Mudstone Particle Mixture." Marine Georesources & Geotechnology 34, no. 4 (2014): 395–402. http://dx.doi.org/10.1080/1064119x.2014.961621.

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27

Wang, Jun-Jie, Shi-Yuan Huang, Yu-Mian Wen, Yang Yang, and Ming-Wei Liu. "Experimental study on interaction between compressibility and permeability of a crushed sandstone–mudstone particle mixture." Marine Georesources & Geotechnology 35, no. 5 (2016): 670–77. http://dx.doi.org/10.1080/1064119x.2016.1216206.

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28

Glinicki, Michał A., Daria Jóźwiak-Niedźwiedzka, Aneta Antolik, Kinga Dziedzic, and Karolina Gibas. "Susceptibility of selected aggregates from sedimentary rocks to alkali-aggregate reaction." Roads and Bridges - Drogi i Mosty 18, no. 1 (2019): 5–24. http://dx.doi.org/10.7409/rabdim.019.001.

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The paper presents the results of investigations into the reactivity of domestic aggregates produced from selected sedimentary rocks, carried out using the new testing methods, consistent with the RILEM and ASTM methods, implemented by GDDKiA (Polish General Directorate for National Roads and Motorways) documents. The range of the investigations covered coarse crushed aggregates produced from limestone, dolomite, sandstone and greywacke rocks, potentially suitable for making strong and durable concrete. No reactive forms of quartz were found in the mineralogical composition of the limestone ag

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29

Zhang, Hongwei, Zhijun Wan, Zijun Feng, and Jinwen Wu. "Shear-induced Permeability Evolution of Sandstone Fractures." Geofluids 2018 (December 23, 2018): 1–11. http://dx.doi.org/10.1155/2018/2416481.

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In underground coal mines, shear-induced changes in regional fluid flow are a major factor causing water inrushes from faults into working faces. Shear slip along preexisting fractures tends to be activated during hydraulic fracturing, and this movement can either enhance or diminish hydraulic fracturing efficiency. To prevent water inrush disasters and further hydraulic fracturing, understanding the evolution of shear-induced permeability in fractures in sedimentary rock is very important. In this study, the evolution of shear-induced permeability in saw-cut sandstone fractures with three dif

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30

Salahou, Mohamed Khaled, Xiyun Jiao, and Yousif A. H. Dallo. "Discussion of (anisotropic hydraulic conductivity and critical hydraulic gradient of a crushed sandstone–mudstone particle mixture)." Marine Georesources & Geotechnology 36, no. 2 (2017): 199–201. http://dx.doi.org/10.1080/1064119x.2017.1296909.

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31

Qiu, Zhen-Feng, and Jun-Jie Wang. "Closure to “anisotropic hydraulic conductivity and critical hydraulic gradient of a crushed sandstone–mudstone particle mixture”." Marine Georesources & Geotechnology 36, no. 6 (2017): 640–42. http://dx.doi.org/10.1080/1064119x.2017.1361491.

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32

Wang, Jun-Jie, Yu-Zhu Cheng, Hui-Ping Zhang, and Di-Ping Deng. "Effects of particle size on compaction behavior and particle crushing of crushed sandstone–mudstone particle mixture." Environmental Earth Sciences 73, no. 12 (2014): 8053–59. http://dx.doi.org/10.1007/s12665-014-3961-7.

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33

Zhang, Ping, Amy T. Kan, Chunfang Fan, et al. "Silica-Templated Synthesis of Novel Zinc-DTPMP Nanomaterials: Their Transport in Carbonate and Sandstone Media During Scale Inhibition." SPE Journal 16, no. 03 (2011): 662–71. http://dx.doi.org/10.2118/130639-pa.

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Summary In this study, a silica-templated synthesis route was adopted for fabrication of zinc phosphonate nanomaterials to expand their use in the delivery of phosphonate inhibitors into crushed formation materials for scale control. Transition divalent metal Zn2+ was chosen because of its ability to significantly increase inhibitor retention and effectiveness. Zinc chloride was first adsorbed onto the surface of 22-nm silica particles, followed by gradual addition of diethylenetriaminepentakis (methylenephosphonic acid) (DTPMP) to form nanometer-sized particles in the presence of sodium dodec

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34

Gu, Zhan Fei, Zhi Kui Liu, Hong Chi Chen, and Ya Wei Wang. "Analysis of the Tunnel Construction and Monitoring Measurement under Complicated Geological Conditions." Applied Mechanics and Materials 90-93 (September 2011): 2091–95. http://dx.doi.org/10.4028/www.scientific.net/amm.90-93.2091.

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In view of certain areas of Guizhou are soft sandstone rock, where single block of rock's hardness is very low and easily crushed, complicated hydrogeology and low level of complex surrounding rock and geological conditions, geological radar prediction is used before the excavation of the tunnel, and New Austrian Tunneling Method was used in the construction. The process of construction segment had been monitored and measured, and the deformation of tunnel had been controlled. According to the situation during excavation and monitoring, the construction method was further improved. Through tra

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35

Gawenda, Tomasz, Agata Stempkowska, Daniel Saramak, Dariusz Foszcz, Aldona Krawczykowska, and Agnieszka Surowiak. "Assessment of Operational Effectiveness of Innovative Circuit for Production of Crushed Regular Aggregates in Particle Size Fraction 8–16 mm." Minerals 12, no. 5 (2022): 634. http://dx.doi.org/10.3390/min12050634.

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The purpose of this paper is to analyze a modern and unique technological system producing common aggregates at the Imielin Dolomite Mine. The installation was built on the basis of inventions of AGH UST and consists of an impact crusher, innovative screens WSR and WSL, light fraction separator SEL and hard fraction separator SET, low-pressure hydrocyclone NHC and infrastructure. The study was carried out on the crusher and screen on the example of production of aggregates with grain size 8–16 mm from dolomite, granite, limestone, sandstone, and gravel. The results showed that cubic aggregates

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36

Kaji, Hiromi, and Toru Takeshita. "Development of Deformation Bands and Deformation Induced Weathering in a Forearc Coal-Bearing Paleogene Fold Belt, Northern Japan." Applied Sciences 12, no. 16 (2022): 8348. http://dx.doi.org/10.3390/app12168348.

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We conducted microstructural and microchemical analyses of deformation bands in a forearc fold belt consisting of the Eocene Urahoro Group located in northern Japan. In the study area, there was one flexure (or monocline) developed where deformation bands pervasively occurred in arkosic sandstone intercalated with mudstone and coal layers. Deformation bands formed at the maximum burial depth of c. 1.5–2.5 km; this was inferred from both the thickness of the overlying strata and vitrinite reflectance values (%RO) of the coal layers (c. 0.5). These bands were inferred to have originated as phyll

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37

WANG, Jun-Jie, Hui-Ping ZHANG, and Di-Ping DENG. "Effects of Compaction Effort on Compaction Behavior and Particle Crushing of a Crushed Sandstone-Mudstone Particle Mixture." Soil Mechanics and Foundation Engineering 51, no. 2 (2014): 67–71. http://dx.doi.org/10.1007/s11204-014-9256-x.

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38

Liang, Yue, Xiao-zhi Lu, Jun-jie Wang, and Ming-wei Liu. "Experimental Study of Shear Behavior of Interfaces Between Crushed Sandstone-Mudstone Particle Mixture and Smooth Steel Plate." Soil Mechanics and Foundation Engineering 53, no. 3 (2016): 158–65. http://dx.doi.org/10.1007/s11204-016-9380-x.

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39

Li, X. J., H. F. Zhao, C. S. Liu, Y. G. Xiong, J. L. Lan, and H. Han. "The influence of roof lithology on the fracture propagation of horizontal well multistage fracturing in the roof of broken soft coal seams." IOP Conference Series: Earth and Environmental Science 1124, no. 1 (2023): 012029. http://dx.doi.org/10.1088/1755-1315/1124/1/012029.

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Abstract Horizontal well multistage fracturing in the roof of broken soft coal seams has been demonstrated to be an effective technique to extract coalbed methane (CBM). However, fracture propagation behaviours under this technology vary significantly with different roof lithologies. Therefore, the influence of roof lithology on fracture propagation was investigated in this study. Based on the No. 5 and No. 11 coal seams in the Hancheng block of the Ordos Basin in China, field tests of horizontal well multistage fracturing in the sandstone and mudstone roof of crushed soft coal seams were perf

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40

Ijah, Christiana, Florence Umoh, and Otobong Essien. "Profile Distribution of Iron and Zinc in Soils formed from Three Different Parent Materials in Akwa Ibom State, Nigeria." AKSU Journal of Agriculture and Food Sciences 7, no. 2 (2023): 40–51. http://dx.doi.org/10.61090/aksuja.2023.008.

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The distribution of total and available levels of iron (Fe) and zinc (Zn) was studied in three major soil types derived from different parent materials in Akwa Ibom State. The parent materials were: Sandstone (SS), Coastal Plain Sands (CPS) and Beach Ridge Sands (BRS), respectively. Six representative soil profiles, two each for SS, CPS and BRS were dug. The soils from the different parent materials were sampled at different depths of 0 – 20, 20 – 40, 40- 60, 60 – 80, 80 – 100 and 100 – 120 cm. The soil samples were air dried, crushed and sieved using a 2mm sieve and stored in labeled bags for

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41

Fotev, Dimitar, and Roumyana Angelova. "Correlation relationships between mechanical parameters of Bulgarian crushed-rock aggregates utilized in railway construction." Geologica Balcanica 46, no. 2 (2017): 17–21. http://dx.doi.org/10.52321/geolbalc.46.2.17.

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Crushed-rock aggregates from 11 railway ballast-producing quarries in Bulgaria have been investigated. The test materials consist of igneous and sedimentary rocks of different ages: basaltic andesite, trachyte, diabase, andesitic tuff, quartz-cemented sandstone, dolomite and five varieties of limestone. The standard laboratory tests (Los Angeles, micro-Deval and point load) and in-situ test (Schmidt hammer) were carried out for determination of the following mechanical properties of aggregates: resistance to fragmentation; wear resistance; strength; and rock hardness. Results show that Los Ang

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42

Haritonovs, Viktors, and Janis Tihonovs. "Use of unconventional aggregates in hot mix asphalt concrete." BALTIC JOURNAL OF ROAD AND BRIDGE ENGINEERING 9, no. 4 (2014): 276–82. http://dx.doi.org/10.3846/bjrbe.2014.34.

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The study investigates use of dolomite sand waste as filler or/and sand material plus blast oxygen furnace steel slag as fine and coarse aggregate for design of high performance asphalt concrete. Both environmental and economic factors contribute to the growing need for the use of these materials in asphalt concrete pavements. This is particularly important for Latvia, where local crushed dolomite and sandstone do not fulfill the requirements for mineral aggregate in high and medium intensity asphalt pavements roads. Annually 100–200 thousand tons of steel slag aggregates are produced in Latvi

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43

Wang, Jun-Jie, Hui-Ping Zhang, Di-Ping Deng, and Ming-Wei Liu. "Effects of mudstone particle content on compaction behavior and particle crushing of a crushed sandstone–mudstone particle mixture." Engineering Geology 167 (December 2013): 1–5. http://dx.doi.org/10.1016/j.enggeo.2013.10.004.

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44

Nweke, O. M>, C. O. Okogbue, C. C. Ani, et al. "Geotechnical Evaluation of Crushed Sandstone Waste Materials from Amasiri Quarries, Southeastern Nigeria for Use in Civil Engineering Projects." October 2022 6, no. 2 (2022): 448–60. http://dx.doi.org/10.36263/nijest.2022.02.0385.

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This paper presents the study of crushed sandstones wastes (CSW) aiming at their utilization as main materials for the base layer of flexible pavements with series of geotechnical laboratory tests contained in American Society for Testing and Materials adopted for their evaluations. The tests conducted included particle size distribution, Atterberg limits, compaction characteristics, California bearing ratio, unconsolidated undrained compressive strength, free swell index and one-dimensional consolidation tests. Statistical analyses using proprietary computer software were used to investigate

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45

Lao, Virginia Claudia. "Perbandingan Metode Perencanaan Tebal Perkerasan Lentur pada Jalan Batas Provinsi." Rekayasa Sipil 16, no. 3 (2022): 191–97. http://dx.doi.org/10.21776/ub.rekayasasipil.2022.016.03.6.

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Due to getting development and improvement zone area in West Sulawesi Province, the Kalumpang–Bonehau-Batas South Sulawesi route is planned to be upgraded to a national road from a district road. The purpose of this study was to compare the 2017 pavement design manual method and component analysis in planning the flexible pavement thickness of inter-provincial roads. The design of flexible pavement thickness uses the 2017 road pavement design manual method, namely AC-WC 40 mm, AC-BC 60 mm, AC-Base 80 mm, and class A top layer 300 mm. The results of the component analysis method, namely the thi

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46

Bamford, M. K., B. Cairncross, and H. Lombard. "Silicified fossil woods from the Late Permian Middleton Formation, Beaufort Group, Eastern Cape Province, South Africa and their palaeoenvironmental significance." South African Journal of Geology 123, no. 4 (2020): 465–78. http://dx.doi.org/10.25131/sajg.123.0036.

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Abstract Fossil wood is described from the Late Permian Middleton Formation, Adelaide Subgroup, Beaufort Group of the Karoo Supergroup in the Easter Cape Province, South Africa. The wood consists of in situ tree trunks up to 9 m long, partially enclosed in fine-grained sandstone surrounded by argillaceous mudstone and siltstone. The strata are poorly exposed due to the eroded and denuded land surface. All are lying horizontally and none are in upright growth positions. Comparisons of the study site lithologies with known surrounding Middleton Formation lithostratigraphy supports the interpreta

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47

Schaetzl, Randall J., Christopher Baish, Patrick M. Colgan, et al. "A sediment-mixing process model of till genesis, using texture and clay mineralogy data from Saginaw lobe (Michigan, USA) tills." Quaternary Research 94 (February 21, 2020): 174–94. http://dx.doi.org/10.1017/qua.2019.82.

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AbstractWe present a sediment-mixing process model of till genesis based on data from surface tills of the Saginaw lobe terrain in lower Michigan. Our research uses a spatial approach to understanding glacial landsystems and till genesis. We sampled calcareous till at 336 upland sites and at 17 sites in lacustrine sediment of the Saginaw Lake plain. The loamy tills have bimodal grain-size curves, with a fine-texture mode near the silt–clay boundary and a sand mode. Spatial grouping analysis suggests that tills can be divided into six groups, each with different textures and clay mineral compos

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48

Ma, Dan, Xin Cai, Zilong Zhou, and Xibing Li. "Experimental Investigation on Hydraulic Properties of Granular Sandstone and Mudstone Mixtures." Geofluids 2018 (2018): 1–13. http://dx.doi.org/10.1155/2018/9216578.

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The caved zone during longwall mining has high permeability, resulting in a mass of groundwater storage which causes a threat of groundwater inrush hazard to the safe mining. To investigate the hazard mechanism of granular sandstone and mudstone mixture (SMM) in caved zone, this paper presents an experimental study on the effect of sandstone particle (SP) and mudstone particle (MP) weight ratio on the non-Darcy hydraulic properties evolution. A self-designed granular rock seepage experimental equipment has been applied to conduct the experiments. The variation of particle size distribution was

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49

Lyashenko, Yuriy, Elena Menshenina, and Elena Revyakina. "Increase in the efficiency of water transport of bulk mineral cargo by the segregation of feedstock at the initial technological stage." E3S Web of Conferences 326 (2021): 00021. http://dx.doi.org/10.1051/e3sconf/202132600021.

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The paper gives the analysis of the volume of transportation of bulk mineral cargoes by water transport. It is established that the problem of the use of technological processes for sorting non-metallic building materials and coals transported by water transport is relevant. It is revealed that in the applied beneficiation system of crushed stone it is possible to reduce energy consumption due to the segregation of material into commercial fractions at the crushing stage by combining operations. The developed design of the receiving - segregation hopper is considered which allows classifying t

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50

Alahbakhshi, Manouchehr, Reza Mehrnia, Mohammad Reza Espahbod, and Afshin Ashja-Ardalan. "Examination of alteration and metasomatic zones based on the tectonic setting of the Kamoo region (northeast of Isfahan, Iran)." Nexo Revista Científica 33, no. 02 (2020): 223–38. http://dx.doi.org/10.5377/nexo.v33i02.10764.

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Kamoo region (northeast of Isfahan) has an anticline structure with a northwest-southeast trend. The exposed part of this anticline consists of siltstone-sandstone and Jurassic shale, which is located below the Cretaceous formation as an unconformity. Penetration by magmatic masses (dikes) and mineralization events are mainly related to fault systems and fractures in the region and follow the trend of the anticline. In addition, the intensity and variety of alterations are affected by tectonic factors, with alteration and metasomatic haloes having developed next to crushed areas. The alteratio

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