The Effect of Soil Particle Arrangement on Shear Strength Behavior of Silty Sand

Daud, Nik Norsyahariati Nik; Hui, Kam Ru; Juliana, Abd Ghafar Azmi

doi:10.1051/matecconf/20164703022

Cited by 13 publications

(7 citation statements)

References 9 publications

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“…In fact, as reported in literature, the grain size distribution of the soil has a significant impact on the mechanical behaviors of the geotechnical materials (Kokusho et al 2004;Wichtmann and Triantafyllidis 2009;Yan and Dong 2011;Wang et al 2013;Wichtmann and Triantafyllidis 2013;Liu et al 2014;Norsyahariati et al 2016;Wang et al 2017Wang et al , 2018bWang et al , 2018c. Based on this consideration, Uesugi and Kishida (1986) conducted a series of shear tests to investigate the effect of the grain size distribution of sandy soils on the shearing behaviors at the soil-structure interface.…”

Section: Introductionmentioning

confidence: 90%

Effect of Grain Size Distribution of Sandy Soil on Shearing Behaviors at Soil–Structure Interface

Wang

Zhou²,

Yin

et al. 2019

J. Mater. Civ. Eng.

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For the geotechnical construction and maintenance, assessing the shearing behavior at the soil-structure interface is significant. This study presents an experimental investigation about the effect of the grain size distribution of a sandy soil on the shearing behaviors at the soil-structure interface, using a modified direct shear apparatus. Five soil samples with different coefficients of uniformity were prepared.The normalized roughness of the structure surface (the ratio between the maximum roughness of the structure plate and the mean grain size of the soil), the relative density, the maximum, the mean and the minimum grain sizes of all samples were controlled the same. During the tests, the shear force, the shear displacement and the vertical displacement were monitored. The results show that at a given shear displacement and normal stress, the sample with lower coefficient of uniformity Cu presents higher shear stress and more pronounced dilative behavior. The increase of Cu leads to the decrease of the friction angle for the soil-structure interface (at both peak and ultimate states) and the decrease of the maximum vertical deformation of the soil sample during the shearing process. As Cu increases, the main force chain at the soil-structure interface turns from the contact between the coarser grains to that mainly formed by the finer grains, resulting in the decrease of the shearing resistance. In comparison with the previous relevant studies, the decreasing trend of the friction angle with the increase of Cu is strongly supported.

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Section: Introductionmentioning

confidence: 90%

Effect of Grain Size Distribution of Sandy Soil on Shearing Behaviors at Soil–Structure Interface

Wang

Zhou²,

Yin

et al. 2019

J. Mater. Civ. Eng.

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“…For this reason, geotechnical engineering studies are interested in the physical and mechanical behavior of soils-bearing structures, as well as the strength between the structure, texture and performance of soils. There are many studies The Importance of Clay in Geotechnical Engineering http://dx.doi.org/10.5772/intechopen.75817 on the soil-orientation effects on the soil properties such as strength, hydraulic conductivity and the swelling-shrinkage relative to each particle [7][8][9][10][11][12]. Ingles [7] examined soil fabric during consolidation.…”

Section: Structure Of Clay and Physico-chemical Propertiesmentioning

confidence: 99%

The Importance of Clay in Geotechnical Engineering

Ural¹

2018

Current Topics in the Utilization of Clay in Industrial and Medical Applications

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Clay is a very important material in geotechnical engineering, because it is often observed in geotechnical engineering practice. Generally, this soil type has numerous problems due to its low strength, high compressibility and high level of volumetric changes. Clay needs to be improved before it can be used in road construction, dams, slurry walls, airports and waste landfills. Improved gradation, a reduction in plasticity and swelling potential, as well as an increase in strength and workability, generally improve the stability of clay. Clay is a fine-grained soil, but not all fine-grained soils are clay. Clay minerals are very electrochemically active; thus, they affect soil microstructures. Due to these characteristics, many important soil problems related to clay have been observed in the past, the importance of which is understood. In this chapter, the properties of clay, as well as the use of clay in geotechnical engineering and geotechnical studies on clay, are examined.

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“…Furthermore, many other scholars have also studied the effect of particle arrangement and distribution on soil shear strength. [30][31][32][33] The related studies indicate that the particle gradation significantly affects the shear behavior of soil.…”

Section: Introductionmentioning

confidence: 99%

Effect of conglomeration gradation on loess shear strength with different water content

et al. 2021

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Particle gradation and water content are important factors affecting shear strength of soil. However, due to chemical cementation and molecular attraction, loess particles commonly stick together forming conglomerations. Till date, the superposition effect of water content and conglomeration gradation on loess shear strength has rarely been studied and undeniably requires further systematic explorations and development. In this study, loess samples were prepared with three conglomeration gradations and five water contents, and the direct shear tests were systematically performed. The shear strength of sample 1 (continuous conglomeration gradation) was found to be the best, followed by sample 2 (large size conglomerations), and sample 3 (small size conglomerations). The difference of samples’ shear strength decreased with increasing water content, and almost closed to zero when water content was 20%. The cohesion of samples first increased and then decreased with increasing water content, the maximum cohesion occurred at 10% water content. The internal friction angles decreased with increasing water content, and reached similar minimum values when the water content was 15%. The increased percentage values of cohesion and internal friction angle caused by conglomeration gradation are in the range of 33.2%–42.1% and 9.8%–32.5%, respectively. Finally, the empirical formulas for water content-cohesion and water content-internal friction angle of different conglomeration gradations samples were established, and the calculated values are in good agreement with test data. The effect of loess conglomeration gradation on shear strength decreased with increasing water content. When the water content was less than 15%, using a good conglomeration graduation could effectively improve loss shear strength.

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The Effect of Soil Particle Arrangement on Shear Strength Behavior of Silty Sand

Cited by 13 publications

References 9 publications

Effect of Grain Size Distribution of Sandy Soil on Shearing Behaviors at Soil–Structure Interface

Effect of Grain Size Distribution of Sandy Soil on Shearing Behaviors at Soil–Structure Interface

The Importance of Clay in Geotechnical Engineering

Effect of conglomeration gradation on loess shear strength with different water content

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