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Journal articles on the topic 'Soft Soil'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Mad Said, Mohd Jazlan, Adnan Zainorabidin, and Aziman Madun. "Soil Velocity Profile on Soft Soil Using Seismic Refraction." Applied Mechanics and Materials 773-774 (July 2015): 1549–54. http://dx.doi.org/10.4028/www.scientific.net/amm.773-774.1549.

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Soil velocity profile often used as subsurface characterization by using geophysical technic. Seismic refraction is one of geophysical technique to determine primary wave (p-wave) velocity of soil profile. In this paper, seismic refraction technique has been performed on two different types of soft soil (peat soil and RECESS clay) for comparison of its p-wave velocity soil profile. From p-wave velocity soil profile comparison, its show the peat soil has soil velocity range from 211 m/s – 534 m/s at depth of 0 – 4 m while the soft clay show soil velocity range from 248 m/s – 1842 m/s at depth o

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2

Wahyuni, Dwi, Dewi Ratna, and Saloma S. aloma. "Reinforcement Of Soft Soil Using Soil Column Method (Soft Soil + CCR + RHA)." Sriwijaya Journal of Environment 5, no. 3 (2020): 172–77. http://dx.doi.org/10.22135/sje.2020.5.3.172-177.

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3

Saputra, Rusdi, and Yulvi Zaika. "Avoid construction failure by controlling settlement with a geosynthetic enchased geofoam granular column." E3S Web of Conferences 464 (2023): 01005. http://dx.doi.org/10.1051/e3sconf/202346401005.

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Soils with low bearing capacity (soft soils) can cause the collapse of overlying structures. Before the superstructure is built, the soft soil needs to be improved first. Effective methods to improve soft soils include applying vertical drain techniques or using geofoam materials. With vertical drains, such as PVD or sand drains, the soft soil settlement can be controlled, while geofoam can be used as a top layer material on soft soil. The purpose of this research is to investigate the performance of Sand Geofoam Granule Columns (SGGCs) as a vertical drain. These SGGCs consist of sand-geofoam

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4

Cao, Wei Ping, Min Zhao, and Qi Chao Shi. "A Numerical Analysis on the Behavior of End-Bearing Pile for Supporting Embankment over Soft Soils." Advanced Materials Research 378-379 (October 2011): 502–6. http://dx.doi.org/10.4028/www.scientific.net/amr.378-379.502.

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Piled embankments are increasingly used to construct highways on soft soils. End-bearing piles for supporting embankment exhibit different characteristics for the soil arch developed within the embankments. A numerical analysis was conducted to evaluate the soil stress concentration ratio, pile and soil settlements, pile axial force, negative skin friction (NSF) and location of the neutral plane (NP) during embankment filling and consolidation of soft soils. The results indicate that the stress concentration ratio varies with time and most of the embankment load is born by the pile. The soil p

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5

Jun, Sang Hyun, and Hyuk Jae Kwon. "Constitutive Relationship Proposition of Marine Soft Soil in Korea Using Finite Strain Consolidation Theory." Journal of Marine Science and Engineering 8, no. 6 (2020): 429. http://dx.doi.org/10.3390/jmse8060429.

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This paper proposes representative constitutive relationship equations of dredging and reclamation soft soil in Korea. The marine soft soils were sampled at 23 dredged-reclaimed construction sites in the Busan, Gwangyang, and Incheon regions in Korea; then, laboratory tests were carried out. The consolidation property was classified as LL = 60% for Busan and Gwangyang marine soft soil and LL = 30% for Incheon marine soft soil by conducting basic physical property tests and consolidation tests. Busan soft soil showed a slightly higher consolidation settlement property than Gwangyang soft soil.

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Parmance, Chandra Syah, Hijrawan AR Coda, Ichsan Rauf, Abdul Gaus, and Komang Arya Utama. "THE EFFECT OF QUICKLIME ON THE CBR VALUE OF SOFT SOIL STABILIZED WITH NICKEL SLAG AND ALUMUNIUM HYDROXIDE." American Journal of Applied Science and Technology 04, no. 12 (2024): 8–19. https://doi.org/10.37547/ajast/volume04issue12-02.

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The construction of road structures on soft soils is prone to structural damage due to the low bearing capacity of the soil under the load imposed by vehicles. Chemical stabilization is a popular method used to increase the bearing capacity of soft soils. This study aims to examine the effectiveness of soft soil stabilization using a mixture of lime, nickel slag, and aluminium hydroxide to enhance soil bearing capacity. The addition of lime as a binding agent is expected to reduce plasticity and increase soil strength, while nickel slag and aluminium hydroxide serve as additives that improve o

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7

Thomas, Ansu. "Soil Stabilisation by Analytical Techniques." IOP Conference Series: Earth and Environmental Science 1326, no. 1 (2024): 012125. http://dx.doi.org/10.1088/1755-1315/1326/1/012125.

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Abstract Soil stabilisation methods are being used for improving the soft soil for various engineering works such as construction of roads. Suitability and sustainability of the use of locally available materials in stabilizing the soft soils should be analysed. For the present study, X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive X-ray (EDX) analysis were done on soft and stabilised (optimum dosages of OPC, AGGBS and enzyme) samples after a curing period of 28 days. It is found that there is a reduction in montmorillonite peaks in XRD patterns of stabilised

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8

Anggraini, M., P. Dhamrodji, and H. Maizir. "Geofoam Block in Soft Soil Embankment Applications: A Review." IOP Conference Series: Earth and Environmental Science 1321, no. 1 (2024): 012019. http://dx.doi.org/10.1088/1755-1315/1321/1/012019.

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Abstract The major issues of building a road over soft soils are low bearing capacity and large settlements. The challenges of road construction on soft soils are enormous, so innovative and environmentally friendly methods are required. Geofoam is a type of lightweight infill material and was already used in Norway in road construction applications in 1972. Using Geofoam reduces compacted fill by 40%, less excavation required and less pulverization of native soil making this a time-saving and economically and environmentally viable solution. The purpose of Geofoam backfill is for lightweight

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9

Vincent, Azunna Chukwuma, and Chiedozie F. Ikebude. "A Comparative Study on the Stabilization of Soft Soil Using Agricultural Wastes (Baggase Ash (BA) And Rice Husk Ash (RHA)." International Journal of Civil Engineering, Construction and Estate Management 11, no. 2 (2023): 39–69. http://dx.doi.org/10.37745/ijcecem.14/vol11n23969.

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Soft soils are expansive soils, also referred to as tropical clay. Soft soil may cause instability to foundations thereby reducing their service life, this necessitates the adoption of a suitable soil stabilization method in order to improve the engineering properties of soft soils. This research work aims at comparing the strength properties of soft soil stabilized using two different agricultural wastes- Bagasse Ash (BA) and Rice Husk Ash (RHA). The studies were conducted to determine the properties of the natural and treated soft soils, the oxide composition of BA and RHA and the evaluation

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10

Villalobos, Miguel, and Celso Romanel. "Seismic Response of Soft Soil Deposit Using Simplified Models." E3S Web of Conferences 92 (2019): 16008. http://dx.doi.org/10.1051/e3sconf/20199216008.

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Near surface soils can greatly influence the amplitude, duration, and frequency content of ground motions. Surveys of the damage caused by earthquakes indicates that the lowest levels of damage occur in structures founded on rock or hard soil, while most of the damage occurs usually in structures founded in soft soil sites. With the aim to understand better the seismic response of soft soils deposits, not susceptible to liquefaction, this study made a comparison between the real seismic response registered in soft soil deposit in the 2011 Tohoku earthquake (Mw=9.1), with the response predicted

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11

Wassie, Tadesse Abebe, and Gökhan Demir. "Mechanical Strength and Microstructure of Soft Soil Stabilized with Cement, Lime, and Metakaolin-Based Geopolymer Stabilizers." Advances in Civil Engineering 2024 (February 16, 2024): 1–11. http://dx.doi.org/10.1155/2024/6613742.

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Soft soils require particular consideration when designing civil engineering structures due to their high compressibility, low shear strength, and permeability. Using chemical additives and geopolymers to stabilize soft soils is a practical approach to improve their engineering properties. The objective of the study was to explore the use of conventional stabilizers alongside metakaolin-based geopolymers. This study also aimed to investigate the compaction characteristics, mechanical strength, shear behavior, and microstructure of stabilized soft soil. The compaction test was carried out using

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12

Tregub, O. V., V. V. Kovalov, Yev O. Lando, S. M. Kochan, and I. G. Andreieva. "NUMERICAL MODELING OF THE STRESS-STRAIN STATE OF THE ROAD EMBANKMENT DURING CONSTRUCTION ON SOFT SOILS." Ukrainian Journal of Civil Engineering and Architecture, no. 2 (026) (April 27, 2025): 126–39. https://doi.org/10.30838/ujcea.2312.270425.126.1152.

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Problem statement. Ensuring the bearing capacity of bases is a pressing issue in the construction of roads and artificial structures on soft soils. The method of preloading the base ensures the strengthening of soft soils. However, the calculation and design methodology for the roadbed, taking into account the specific features of its interaction with the soil base during construction, requires improvement. The purpose of the research is to improve the methodology of numerical modeling using the finite element method (FEM) for the stress-strain state (SSS) of road embankments during constructi

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13

Srihandayani, Susy. "Alternative foundation for reducing building losses due to foundation failure in soft soil." E3S Web of Conferences 156 (2020): 02006. http://dx.doi.org/10.1051/e3sconf/202015602006.

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Much damage to buildings occurs in areas that have soft soil layers due to the failure of the foundations. Besides, foundations in soft soils generally require very expensive construction. For this reason, proper research needs to help develop strong foundations that can be used on soft soils with relatively low cost. In this research, foundations with various diameters and depths were tested on soft soil. The foundations were made of PVC pipes with diameters of ½ ", 1", 2 " or 2.5" and the same depth. Soft soil in the form of clay with particle-sizes that passed filter No. 200 was used. Befor

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14

Bui Truong, Son, Nu Nguyen Thi, and Duong Nguyen Thanh. "An Experimental Study on Unconfined Compressive Strength of Soft Soil-Cement Mixtures with or without GGBFS in the Coastal Area of Vietnam." Advances in Civil Engineering 2020 (June 30, 2020): 1–12. http://dx.doi.org/10.1155/2020/7243704.

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Soft soil is widely distributed in Vietnam, especially in the coastal area. In engineering practice, soft soil cannot be used to build any construction and needs to be improved or treated before building construction. In addition, Vietnam has many pig-iron or thermal power plants, which annually produce a huge amount of granulated blast furnace slag (GBFS). Thus, the use of this material for soft soil improvement needs to be considered. This paper presents experimental results on the unconfined compressive strength (UCS) of three Vietnam’s soft soils treated with Portland cement and Portland c

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15

Vooturi, Rohan Babu, and Srinivas Kadali. "Bearing capacity analysis of cohesive-frictional soil as filling material over soft soil." Journal of Physics: Conference Series 2779, no. 1 (2024): 012061. http://dx.doi.org/10.1088/1742-6596/2779/1/012061.

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Abstract The construction of superstructures on soft soils demands the desired bearing capacity. This can be achieved through various approaches, including improving soil properties using chemical methods, or by employing techniques such as increasing footing dimensions or using micro piles which are uneconomical and time-consuming. To overcome this, enhancement of bearing capacity of soft soils was done by simple and economical technique i.e., cutting the existing soft soil and filling the Cohesive-frictional soil with a defined ratio of top layer thickness to width of the footing. To conduct

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16

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 in

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17

Sun, Jinbo, Li Guo, Liang Gong, Fei Zheng, and Hao Hao. "Calculation and Analysis of Nonlinear Algorithm for Stability of Nanosilica Powder Soft Soil Pile Foundation." International Journal of Analytical Chemistry 2022 (August 24, 2022): 1–6. http://dx.doi.org/10.1155/2022/1451633.

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In order to reasonably evaluate the stability of the embankment supported by the rigid pile composite foundation, a nonlinear algorithm calculation and analysis method for the stability of the nanosilica powder soft soil pile foundation is proposed. First, the soft soil foundation reinforced by the composite structure of “piles (prestressed pipe piles, (cement fly-ash gravel, CFG) piles)—pile caps—geotextile pads” is analyzed through the soft soil embankment test section of the Wenfu high-speed railway. Second, the compressive modulus under one-dimensional confining compression is calculated u

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18

Sianturi, Novdin Manoktong, Mohd Khairul Amri Kamarudin, Dermina Roni Santika Damanik, Virgo Erlando Purba, and Deardo Samuel Saragih. "The Mechanical Behavior of Soft Soil Stabilized with Lime and Volcanic Ash." MEDIA KOMUNIKASI TEKNIK SIPIL 28, no. 1 (2022): 118–27. http://dx.doi.org/10.14710/mkts.v28i1.41963.

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The properties of soft clay can be seen from the compressive strength value through the unconfined compressive strength (UCS) test. Soft soil was less well used as the subgrade for construction. The aim is to determine the increase in the unconfined compressive strength and bearing capacity of the foundation due to the addition of lime and volcanic ash on soft soil. Soft soil has undrained shear strength < 25 kPa based on the unconfined compressive strength test. The unconfined compressive strength test has been conducted on the soil-lime mixture and soil-volcanic ash mixture of 3-12% respe

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19

Jusi, Ulfa, P. Pratikso, and Harnedi Maizir. "Numerical model analysis of subgrade settlement with foam mortar reinforcement based on thickness variation." Journal of Applied Engineering Science 22, no. 4 (2024): 810–18. https://doi.org/10.5937/jaes0-53365.

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Soft soils have low bearing capacity characteristics and can cause high settlement. Sub grade which becomes the lowest layer in road construction is expected to have a strong bearing capacity so that it can carry the construction load on it. To overcome this problem, it is necessary to reinforce it. Problems will arise if the thickness of the soft soil in the subgrade varies. So, it needs to know and identify the scale of declining that occurs if the soft soil variation is reinforced on it. Foam mortar is an alternative reinforcement that is expected to improve the properties of the soft soil.

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20

Sahrul R., Mohammad. "Numerical Modeling of Soil Embankment on Soft Soil Using Variation of Expanded Polystyrene (EPS) Geofoam Material Type." Sustainable Civil Building Management and Engineering Journal 1, no. 4 (2024): 8. http://dx.doi.org/10.47134/scbmej.v1i4.2871.

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Subgrade is the layer of soil that lies beneath the pavement. The subgrade plays an important role in supporting and spreading the load from the pavement to the underlying soil. Terzaghi, et al. (1967) state that soft soils can pose serious challenges in geotechnical engineering, due to their tendency to experience large settlement under structural loads. Handling soft soils often requires specialized methods such as preloading, vacuum consolidation, or the use of geosynthetics to improve stability. One of the geosynthetics used in handling soft soil is Expanded Polystyrene (EPS) Geofoam. This

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21

Iskandar and Rabiya. "Perbandingan Pengujian Konsolidasi Menggunakan Alat Rowe Cell dan Oedometer pada Tanah Lanau Lunak." Potensi : Jurnal Sipil Politeknik 22, no. 2 (2020): 149–55. http://dx.doi.org/10.35313/potensi.v22i2.1928.

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Soil consolidation testing using an oedometer and rowe cell. Oedometers are often used on clay and soft soils. However, in the development of the rowe cell device, the results of lowering soft soil were better than the oedometer. The advantage of this rowe cell is that it can determine the saturation value of the soil samples tested. The rowe cell tester can measure the pore water pressure at the beginning and end of each consolidation stage. This rowe cell can provide suitable settlement for soft soils. This consolidation test to obtain soil parameters such as Cv and Cc by using the rowe cell

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22

Alkhorshid, Nima, Gregório Araújo, and Ennio Palmeira. "Geosynthetic Encased Column: comparison between numerical and experimental results." Soils and Rocks 44, no. 4 (2021): 1–12. http://dx.doi.org/10.28927/sr.2021.073121.

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The use of granular column is one of the ground improvement methods used for soft soils. This method improves the foundation soils mechanical properties by displacing the soft soil with the compacted granular columns. The columns have high permeability that can accelerate the excess pore water pressure produced in soft soils and increase the undrained shear strength. When it comes to very soft soils, the use of granular columns is not of interest since these soils present no significant confinement to the columns. Here comes the encased columns that receive the confinement from the encasement

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23

Kusumastuti, Dyah Pratiwi, and Irma Sepriyanna Sepriyanna. "Pengaruh Penambahan Serbuk Kaca Dan Abu Sekam Pada Tanah Lunak Berdasarkan Uji Konsolidasi." FORUM MEKANIKA 8, no. 2 (2019): 63–70. http://dx.doi.org/10.33322/forummekanika.v8i2.882.

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It can not be avoided when the construction must stand on soft soil, then the construction will suffer damage due to subsidence or congestion from soft soil. To improve soft soils as one part of the construction of them is the method of chemical stabilization of the soil. The stabilizer material mixed was 10% glass powder and the percentage of husk ash was 0%, 2.5%, 5%, 7.5% and 10% of the dry weight of the original soil sample. Changes in the characteristics of soft soil and stabilized soils are reviewed based on the consolidation test. Based on the results of the study, the value of the void

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24

Liu, Hong Jun, Wei Shan, Yan Qiu Yang, Chun Jiao Wang, Ying Guo, and Pi Xiang Wang. "The Engineering Properties Comparative Study of Wetlands Soft Soil and Soft Soil of other Genesis." Advanced Materials Research 150-151 (October 2010): 484–92. http://dx.doi.org/10.4028/www.scientific.net/amr.150-151.484.

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In order to provide technical reference in soft soil foundation treatment for construction of high-grade highway in wetlands soft soil area,by collecting undisturbed soil samples in Qiqihaer-Fuyu section of Jiagedaqi-Beijing highway and using triaxial tests, direct shear test, compressed consolidation testing and other testing methods, a detailed laboratory test and study has been carried out on the soft soil engineering properties and the comparative study on physical and mechanical index, compressed consolidation properties, shearing strength and shearing strength index and so on of wetlands

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25

Anggraini, Muthia, P. Pratikso, and Harnedi Maizir. "Numerical modeling of embankment on thin clay soil with geofoam." Journal of Applied Engineering Science 22, no. 4 (2024): 819–27. https://doi.org/10.5937/jaes0-53366.

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Soft soils cause problems in road subgrades because they have low bearing capacity. Embankments on soft ground need to be identified and reviewed before construction starts. Various soil reinforcement techniques can be used to improve soft soil conditions. This research focuses on using geofoam material as an embankment on soft soil. The aim is to analyze the modeling of soft soil embankment with geofoam. The research method is a numerical method using the Plaxis 2D version 2023 application. There are two models in this study, namely the embankment model without geofoam, 100 cm thick subgrade,

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26

Bách, Phạm Tiến, Võ Đại Nhật, Nguyễn Việt Kỳ, and Lê Quân. "Maxwell model geotextile encased stone column in soft soil improvement." Science & Technology Development Journal - Engineering and Technology 4, no. 1 (2021): first. http://dx.doi.org/10.32508/stdjet.v4i1.772.

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In the field of geotechnical – soft soil improvement, the mathematical model or mechanical model is one of the important input parameters for the design calculations or studies. The determination of the appropriateness of the models has a great influence on the accuracy results of design and calculation as well as the sustainable stability of soft ground after improvement. On the contrary, the selection of inadequate calculation models will lead to increased costs of soft soil improvement, possibly even leading to the destabilization of the work and causing immense loss of people and property.

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27

Vasiya, Vipulkumar, and Chandresh Solanki. "An Experimental Study on Corex (Steel) Slag Reinforced with Terrazyme Treated Clay for Improvement of Soft Soil." Trends in Sciences 19, no. 15 (2022): 5605. http://dx.doi.org/10.48048/tis.2022.5605.

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Stability and settlement problems are common for foundations constructed on soft soils. In major parts of the world, ground improvement techniques have been used to mitigate these challenges. This research aims to stabilize the soft soils using corex steel slag blended with terrazyme treated clay. The corex steel slag is an industrial waste formed during the extraction of steel from ores through the corex process. The corex slag of sand size in the form of columns have been used to improve the load-carrying capacity of the soft soils and to control the settlement. To increase the stiffness of

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28

Dai, Chen-Xiang, Qiong-Fang Zhang, Shao-Heng He, An Zhang, Hua-Feng Shan, and Tang-Dai Xia. "Variation in Micro-Pores during Dynamic Consolidation and Compression of Soft Marine Soil." Journal of Marine Science and Engineering 9, no. 7 (2021): 750. http://dx.doi.org/10.3390/jmse9070750.

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In this study, to explore the microstructure deformation mechanism of marine soft marine soil under cyclic loading, we analyzed the dynamic properties of soft marine soil under cyclic loading via dynamic consolidation compression testing. Then, using Image-Pro Plus (IPP) 6.0 image analysis software, and according to the dynamic consolidation compression test results and the images from a scanning electron microscope (SEM), we determined the weakening effect of soft soils under different consolidation confining pressures, different cyclic stress ratios, and different over-consolidation ratios.

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Wei, Jihong, Yan Men, Feng Zhu, Huilin Le, and Haotian Fan. "The reinforcement effects of deep soft soil foundation with high degree of saturation under dynamic compaction." Advances in Mechanical Engineering 10, no. 6 (2018): 168781401878263. http://dx.doi.org/10.1177/1687814018782633.

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The dynamic compaction method is effective to reinforce soft soil foundation with a low degree of saturation. However, deep soft soil foundation with high degree of saturation has some different characteristics. It has been widely considered that dynamic compaction method is unsuitable to improve the characters of deep soft soil foundation with high degree of saturation. In this article, we will show that the dynamic compaction method with vacuum well-point dewatering is effective to deep soft soil foundation with high degree of saturation reinforcement. In situ and laboratorial experiments ar

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30

Cao, Wei Ping, and Min Zhao. "Performance of Floating Piles for Supporting Embankments in Soft Soils." Applied Mechanics and Materials 105-107 (September 2011): 1433–37. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.1433.

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Reinforced concrete piles are often used to support highway embankments in soft soils. The performance of floating piles differs significantly from that of end-bearing piles. A numerical analysis was conducted to investigate the soil stress concentration ratio, pile and soil settlements, pile axial force, negative skin friction (NSF) and the location of the neutral plane (NP) during embankment filling and consolidation of soft soils when the soft soils is treated by using reinforced concrete floating piles. The results indicate that the pile axial force as well as negative skin friction is clo

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31

Chen, Dashuo, Yuedong Wu, Jian Liu, Huiguo Wu, and Yuzhe Ren. "Field Observation and Settlement Prediction Study of a Soft Soil Embankment under Rolling Dynamic Compaction." Applied Sciences 14, no. 15 (2024): 6454. http://dx.doi.org/10.3390/app14156454.

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Rolling dynamic compaction (RDC) has been found to be useful for compaction soils and is now widely used globally. Because RDC is not often used in soft soils with poor engineering properties, field monitoring was used to study the soft clay embankment responses under RDC conditions in this study. Analysis of the monitoring data revealed that the response of the soil occurred mainly in the first 20 passes. Field monitoring revealed a strong correlation between settlement, horizontal displacement, and pore water pressure. The depth of impact of RDC on the soft soil embankment was between 3 and

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32

Do, Thang Hong, Phong Van Nguyen, and Hung Van Nguyen. "Unconfined compressive strength assessment of soil-cement mixtures in Hai Duong city." Journal of Mining and Earth Sciences 64, no. 6 (2023): 58–65. http://dx.doi.org/10.46326/jmes.2023.64(6).07.

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The unconfined compressive strength (qu) of the soil-cement mixture (S-CM) depends on many factors, in which the soil type and the cement content (%CM) are very important factors. The soil type determines the fine particle content and affects the effectiveness of soil-cement mixture. Meanwhile, %CM has a direct influence on the qu of the S-CM. The cost of foundation treatment methods for small and medium-sized constructions depends on the reasonable cement content. This paper presents the unconfined compressive strength of S-CM for five common cohesive soils in Hai Duong city (soft clay, soft

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33

Liu, Yong Jian, Zhang Ming Li, Yin Wang, Yi Mei Liu, Yong Jian Chen, and Hui Lin. "Study on Deformation Property of Soft Soil Based on Neural Networks." Applied Mechanics and Materials 353-356 (August 2013): 270–73. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.270.

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Based on the triaxial test results of soft soils, an error back propagation network predicting model for deformation property of soft soil is built. Improved BP neural network model is trained by additional momentum term, adaptive learning rate and Bayesian regularization performance function. Research shows that improved BP neural network model applied to predict soft soil foundation settlement, has fast computation, high accuracy, strong generalization ability, and good capability of matching the real data and the measured one. According to test data, the creep models can avoid any artificia

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Abd. Hamid, Hamzah, Mohd Jamaludin Md. Noor, Rohaya Alias, and Asmidar Alias. "PREDICTION OF SOIL SETTLEMENT ON SOFT CLAY SOIL USING NORMALIZED ROTATIONAL MULTIPLE YIELD SURFACE FRAMEWORK (NRMYSF)." Jurnal Teknologi 85, no. 1 (2022): 43–51. http://dx.doi.org/10.11113/jurnalteknologi.v85.18527.

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Soft clays are highly compressible, high-water content, low shear strength, and have poor permeability, which result in significant settlement under long-term loads. Therefore, one of the most challenging geotechnical engineering problems is to predict the settlement from soft clay soil. Normalized Rotational Multiple Yield Surface Framework (NRMYSF) is developed from the soil stress-strain behaviour and shear strength characteristic. It is able to estimate the stress-strain curve for shear strength in triaxial tests. The consolidated drained (CD) triaxial tests and conventional 1-dimensional

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35

Keenan, Sarah W., Sean M. Schaeffer, and Jennifer M. DeBruyn. "Spatial changes in soil stable isotopic composition in response to carrion decomposition." Biogeosciences 16, no. 19 (2019): 3929–39. http://dx.doi.org/10.5194/bg-16-3929-2019.

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Abstract. Decomposition provides a critical mechanism for returning nutrients to the surrounding environment. In terrestrial systems, animal carcass, or carrion, decomposition results in a cascade of biogeochemical changes. Soil microbial communities are stimulated, resulting in transformations of carbon (C) and nitrogen (N) sourced from the decaying carrion soft tissues, changes to soil pH, electrical conductivity, and oxygen availability as microbial communities release CO2 and mineralize organic N. While many of the rapid changes to soil biogeochemistry observed during carrion decomposition

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Hary Yanto, Fendi, Yusep Muslih Purwana, and Niken Silmi Surjandari. "Finite Element Method (FEM) of Rigid Pavement Laid on Soft Soil Stabilized with Soil Cement Column." Applied Mechanics and Materials 845 (July 2016): 83–88. http://dx.doi.org/10.4028/www.scientific.net/amm.845.83.

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Several investigators have extended the numerical analysis to model ground improvement using soil-column to support structures. Cement columns are widely used to improve the load deformity characteristics of soft soils. This technique would increase soil bearing capacity and reduces soil deformation owing to improving of soil strength and stiffness. The aim of this paper is to determine the rigid pavement structure deformity on soft soil for the cases of with and without column soil cement. Two geometrical models were used in this analysis: (a) without column soil cement and (b) with column so

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Wei, Song, Qing Yu Zhang, Jian Guo Liu, Liang Hui Xu, and Qing Chen. "Test Research on the Basic Properties of Soft Soil along the Yangtze River Anhui Province." Advanced Materials Research 594-597 (November 2012): 596–99. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.596.

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The general soft soil widely exists in coastal, riverside and lakeside areas. Large area along the Yangtze River in Anhui Province is also the distribution of soft soil. The existence of soft soil has some degree effect on the project construction. According to the laboratory tests, the basic properties of the soft soil in these areas were researched. Based on test results, and compared with the soft soil of other areas, results show that the soft soil of Anhui along the Yangtze River has its own special nature. It include that, compared with other areas soft soil, the soil void ratio and comp

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'Ain, Hurun, and Firmanilah Kamil. "Soft Soil Consolidation with the Electroosmosis Effect." Applied Research on Civil Engineering and Environment (ARCEE) 3, no. 02 (2022): 104–12. http://dx.doi.org/10.32722/arcee.v3i02.4386.

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Areas with geomorphology in plains or lowlands, such as Pontianak City, have soft soil and peat covering most of their area. Lands in areas with low soil bearing capacity, high water content, high compressibility properties, and high groundwater levels or even practically the same as the land surface. Theoretically, soil improvement is preferred over several other options such as relocation, redesign, and replacement of unsuitable soils. Electroosmosis is one of the effective methods to reduce the moisture content in soft clay to reduce the amount of settlement that occurs when loading is carr

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Sultanov, Karim, Pavel Loginov, Sabida Ismoilova, and Zulfiya Salikhova. "Variable moduli of soil strain." E3S Web of Conferences 97 (2019): 04013. http://dx.doi.org/10.1051/e3sconf/20199704013.

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The experimental diagrams between stress and strain components for soft soils are non-linear. Nonlinear diagrams qualitatively differ for soils of undisturbed and disturbed structures. It is believed that the manifestations of nonlinear properties of soil are associated with micro-destruction of soil structure under compression and, therefore, with changes in its mechanical characteristics under strain. It follows that the modulus of elasticity, Poisson’s ratio, viscosity and other mechanical parameters are the variables in the process of soil strain. Based on this, from the experimental resul

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Souadeuk, Anouar, and Zeineddine Boudaoud. "Reinforced Soft Soil by CSV with/without Polypropylene fibres: Experimental and Numerical analysis." Frattura ed Integrità Strutturale 16, no. 59 (2021): 374–95. http://dx.doi.org/10.3221/igf-esis.59.25.

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Columns of mixed soil-sand-cement (CSV), is one of the most unknown used methods for soft soil stabilization that has not been studied before. To this end, in this paper, consolidated drained (CD) triaxial compression tests after have been cured for 28 days, were carried out to investigate the effectiveness of CSV, which is mainly used to reinforce soft soil. Then, the influence of soft soil content (25%, 50%, 75%) on materials of CSV with/without polypropylene (PP) fibers is established. The percentages of soft soils (50%, 75%) are experimentally doable and the remaining percentage (25%) was

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Xu, Bin Bin. "Influence of Soil Structure on the Mechanical Response of Soft Soil." E3S Web of Conferences 38 (2018): 03027. http://dx.doi.org/10.1051/e3sconf/20183803027.

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Usually the natural sedimentary soils possess structure more or less, which makes their mechanical response much different from the fully remolded soils. In this paper, the influence of soil structure on the mechanical response such as compressibility, shear, permeability is literately reviewed. It is found that the compressibility and consolidation behavior of structured and remolded soils can be divided clearly before or after the structural yield stress. The stress-strain relationship can be divided into two segments before and after the structural yield stress. Before the yield stress, the

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Yu, Chunyang, Jia Yuan, Chunyi Cui, Jiuye Zhao, Fang Liu, and Gang Li. "Ontology Framework for Sustainability Evaluation of Cement–Steel-Slag-Stabilized Soft Soil Based on Life Cycle Assessment Approach." Journal of Marine Science and Engineering 11, no. 7 (2023): 1418. http://dx.doi.org/10.3390/jmse11071418.

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Steel slag has become a promising supplementary cementitious material for soft soil stabilization. However, there is a lack of research on the integrated assessment of cement–steel-slag-stabilized soft soils (SCSs) from the performance, environmental, and economic perspectives. In this study, an ontology framework for the sustainable evaluation of SCSs was developed based on the life cycle assessment (LCA) approach, which combined a knowledge base with semantic web rules to achieve an automated decision design for soft soil stabilization, considering comprehensive benefits. The ontology framew

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Karim, Hussein, Makki Al-Recaby, and Maha Nsaif. "Stabilization of soft clayey soils with sawdust ashes." MATEC Web of Conferences 162 (2018): 01006. http://dx.doi.org/10.1051/matecconf/201816201006.

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The problems of soft clayey soils are taken in considerations by many Iraqi geologists and civil engineers, because about 35% of the Iraqi clay soils (especially southern Iraq) are weak. Thus, it is necessary to improve the properties of such soils for road construction by means of using of various stabilizers such as sawdust ash. The main goal of the present study is to stabilize soft clay models with sawdust ash (SDA) additive using different percentages (0, 2, 4, 6, 8 and 10% by dry weight of soil). The results revealed that the additive has adverse effects on the property of soil indices b

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Bo, M. W., V. Choa, and K. S. Wong. "Reclamation and soil improvement on ultra-soft soil." Proceedings of the Institution of Civil Engineers - Ground Improvement 9, no. 1 (2005): 23–31. http://dx.doi.org/10.1680/grim.2005.9.1.23.

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Konrad, J. M. "Piezo-friction-cone penetrometer testing in soft clays." Canadian Geotechnical Journal 24, no. 4 (1987): 645–52. http://dx.doi.org/10.1139/t87-078.

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A comprehensive in situ testing program using a 50-kN electric piezo-friction-cone penetrometer was carried out at three different sites in soft marine clays. In these soils, the measured penetration resistance and friction are less than 4% of the full design capacity of the load cells. Although the strain gauges are temperature compensated, the importance of temperature effects in these soil conditions is demonstrated. The paper outlines a testing procedure to minimize the errors associated with zero shift in cone testing and to obtain meaningful data in weak soils with 50-kN penetrometers.Po

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Awn, Safa Hussain Abid, and Jasim M. Abbas. "Improvement of Soft Soil by Stone Column Treated with Bentonite." Key Engineering Materials 857 (August 2020): 283–91. http://dx.doi.org/10.4028/www.scientific.net/kem.857.283.

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Soft clayey soils cover wide Iraqi areas specially the regions close to rivers and the southern part of this country Heavy weight structures like: highways, dams, multiple story buildings are suffering unacceptable settlement, when constructing on soft soils. The high contamination of water in such soils decrease the effective stress and reduce bearing capacity. The need was appeared to improve such problematic soil by the use of new technique of stone column treated with different percentages of natural bentonite by a series of field tests using full scale concrete footing constructed on soft

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Mahabub, Md Shakil, and Mohammad Rafikul Islam. "The Subsoil Characterization of Matarbari Ultra Super Critical Coal-Fired Power Project, Bangladesh." Volume 5 - 2020, Issue 9 - September 5, no. 9 (2020): 931–45. http://dx.doi.org/10.38124/ijisrt20sep699.

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In this research, the subsoil characteristics and geotechnical issues have been evaluated for ground improvement, land development and design facilitation of Matarbari Ultra Super Critical Coal-Fired Power Project, Bangladesh. The subsoil conditions and geotechnical issues are addressed by determining the geotechnical parameters of soil. The soil characteristics are obtained from soil investigation and executed under land development for the procurement of power plant facilities. The American Society for Testing and Materials (ASTM International) standard is used to estimate all the soil param

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Rosli, Najmiah, Rosli Saad, Nazrin Rahman, and Nur Azwin Ismail. "Soft soils: A study on their electrical resistivity values and geotechnical properties (porosity, SPT and particle size distribution)." Warta Geologi 46, no. 3 (2020): 186–90. http://dx.doi.org/10.7186/wg463202002.

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Soft soils pose abundant engineering issues due to its low bearing capacity and shear strength. Comprehensive study on soft soil’s physical properties such as shear strength and ability to store water (porosity) could help in devising the optimum ground improvements and foundations techniques. Therefore, physical properties of soft marine clay in Nibong Tebal were thoroughly studied using 2-Dimensional Resistivity Imaging (2-DRI) method in conjunction with porosity measurements, standard penetration test values (SPT-n) and particle size distribution (PSD) analysis. The 2-DRI profile depicts th

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Ambassa, Zoa, and Jean Chills Amba. "Assessment of Stiffness and Strength Parameters for the Soft Soil Model of Clays of Cameroon." Advances in Civil Engineering 2020 (September 18, 2020): 1–16. http://dx.doi.org/10.1155/2020/8877367.

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This paper focuses on the advanced modelling of soft Cameroon clays for the global prediction of the behaviour of geotechnical structures. A comprehensive set of experimental data on Cameroon subsoils from the oedometer and triaxial tests are analyzed in this paper in order to determine the stiffness and strength parameters for the Soft Soil model. It is based on 71 soil samples taken from both sides of the construction sites of several major structures across the territory. At the first approach, the soil samples taken were analyzed in a geotechnical laboratory to obtain physical and mechanic

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Aljorany, Ala Nasir, and Fatema Safaa Noori. "EFFECT OF PVD AND VACUUM PRESSURE ON SATURATED-UNSATURATED SOFT SOILS." Journal of Engineering 23, no. 1 (2017): 63–77. http://dx.doi.org/10.31026/j.eng.2017.01.05.

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Soft clays are generally sediments deposited by rivers, seas, or lakes. These soils are fine-grained plastic soils with appreciable clay content and are characterized by high compressibility and low shear strength. To deal with soft soil problems there is more than one method that can be used such as soil replacement, preloading, stone column, sand drains, lime stabilization and Prefabricated Vertical Drains, PVDs. A numerical modeling of PVD with vacuum pressure was analyzed to investigate the effect of this technique on the consolidation behavior of fully and different depths of partially sa

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