Deformation characteristics of coarse-grained soil with various gradations

2014 ◽  
Vol 21 (6) ◽  
pp. 2469-2476 ◽  
Author(s):  
Fei Meng ◽  
Jia-sheng Zhang ◽  
Xiao-bin Chen ◽  
Qi-yun Wang
Keyword(s):  
Coarse Grained ◽  
Deformation Characteristics ◽  
Coarse Grained Soil

Study on Compression Deformation Characteristics of Coarse-Grained Soil in High Filled Subgrade

2013 ◽  
Vol 438-439 ◽  
pp. 1089-1092
Author(s):  
Qun Liu ◽  
Xiang Bo Deng
Keyword(s):  
Moisture Content ◽  
Uniaxial Compression ◽  
Coarse Grained ◽  
Compressive Deformation ◽  
Uniaxial Compression Test ◽  
Coarse Particles ◽  
Deformation Characteristics ◽  
Railway Construction ◽  
Compression Deformation ◽  
Coarse Grained Soil

Coarse-grained soil is widely used in railway construction, and it is of great significance to take research on how compression deformation characteristics affect deformation of coarse-grained soil in high filled subgrade. To analyze compression deformation characteristics of coarse-grained soil under different moisture content and different grain compositions conditions, influence pattern of moisture content and grain compositions was researched through uniaxial compression test. The result indicates that compressive deformation is in logarithm relation with time; moisture content and grain compositions are important factors that affect the characteristics of compressive deformation of sandy slate coarse-grained soil and it is better to control subgrade settlement with dry or saturated coarse-grained soil which contains 70% coarse particles.

scholarly journals Experimental study on permanent deformation characteristics of coarse-grained soil under repeated dynamic loading

2021 ◽  
Author(s):  
Huihao Mei ◽  
Sajjad Satvati ◽  
Wuming Leng
Keyword(s):  
Stress State ◽  
Strain Rate ◽  
Dynamic Stress ◽  
Stress Amplitude ◽  
Permanent Deformation ◽  
Confining Pressure ◽  
Coarse Grained ◽  
Deformation Characteristics ◽  
Permanent Strain ◽  
Coarse Grained Soil

AbstractPractical assessment of subgrade settlement induced by train operation requires developing suitable models capable of describing permanent deformation characteristics of subgrade filling under repeated dynamic loading. In this paper, repeated load triaxial tests were performed on coarse-grained soil (CGS), and the axial permanent strain of CGS under different confining pressures and dynamic stress amplitudes was analysed. Permanent deformation behaviors of CGS were categorized based on the variation trend of permanent strain rate with accumulated permanent strain and the shakedown theory. A prediction model of permanent deformation considering stress state and number of load cycles was established, and the ranges of parameters for different types of dynamic behaviors were also divided. The results indicated that the variational trend of permanent strain rate with accumulated permanent strain can be used as a basis for classifying dynamic behaviors of CGS. The stress state (confining pressure and dynamic stress amplitude) has significant effects on the permanent strain rate. The accumulative characteristics of permanent deformation of CGS with the number of load cycles can be described by a power function, and the model parameters can reflect the influence of confining pressure and dynamic stress amplitude. The study’s results could help deepen understanding of the permanent deformation characteristics of CGS.

scholarly journals ELUTION CONTROL OF Cr（Ⅵ）FROM VOLCANIC COARSE-GRAINED SOIL IMPROVED WITH CEMENT

2017 ◽  
Vol 71 (1) ◽  
pp. 661-666 ◽  
Author(s):  
Munehisa YOSHIDA ◽  
Toshiya KITAMURA ◽  
Hideyuki KATSUSHIMA ◽  
Keisuke KONDO
Keyword(s):  
Coarse Grained ◽  
Coarse Grained Soil

The Construction Technology of Light Masonry Retaining Structure Used in Fluctuating Belt of the Three Gorges Reservoir Area

2011 ◽  
Vol 255-260 ◽  
pp. 602-606
Author(s):  
Long Fei Cheng ◽  
Lin Yan Li
Keyword(s):  
Precast Concrete ◽  
Retaining Wall ◽  
Coarse Grained ◽  
Three Gorges Reservoir Area ◽  
Construction Technology ◽  
Reservoir Area ◽  
Retaining Structure ◽  
Concrete Blocks ◽  
Coarse Grained Soil

Masonry retaining structure consists of precast concrete blocks, which has good looks and is in harmony with environment. Blocks with proper shape can be used in fluctuating belt of the reservoir area. The construction of masonry structure should conform to the following steps: first, excavate the foundation ditch, lay a cushion and arrange the controlling points, insuring the quality of the first layer of blocks; it would be better to choose inorganic coarse-grained soil as filler and to set a water filtering layer with a height more than 30cm behind the retaining wall; carry on the construction of earth filling behind the wall after the blocks are fixed as requested, and then fix the geotechnical grille when the height of earth filling reaches the elevation of the grille; put Geotechnical Fabric between permeable aggregate and the earth filling behind it to keep the two materials from mixing.

Water-vapor-heat behavior in a freezing unsaturated coarse-grained soil with a closed top

2018 ◽  
Vol 155 ◽  
pp. 120-126 ◽  
Author(s):  
Ruiqiang Bai ◽  
Yuanming Lai ◽  
Mingyi Zhang ◽  
Jianqiang Gao
Keyword(s):  
Water Vapor ◽  
Coarse Grained ◽  
Coarse Grained Soil
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