Experimental measurement and numerical simulation of frost heave in saturated coarse-grained soil

2017 ◽  
Vol 137 ◽  
pp. 68-74 ◽  
Author(s):  
Anyuan Li ◽  
Fujun Niu ◽  
Hao Zheng ◽  
Satoshi Akagawa ◽  
Zhanju Lin ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Experimental Measurement ◽  
Coarse Grained ◽  
Frost Heave ◽  
Coarse Grained Soil

Numerical Simulation of Triaxial Tests for Coarse-Grained Soil Considering the Initial Fabric of Samples Grain

2010 ◽  
Vol 143-144 ◽  
pp. 873-878
Author(s):  
Guang Jin Wang ◽  
Xiang Yun Kong ◽  
Yi Lei Gu ◽  
Chun He Yang
Keyword(s):  
Numerical Simulation ◽  
Internal Friction ◽  
Random Distribution ◽  
Friction Angle ◽  
Internal Friction Angle ◽  
Coarse Grained ◽  
Triaxial Tests ◽  
Strength Parameters ◽  
The Relationship ◽  
Coarse Grained Soil

The strength parameters of granular coarse-grained soil are the critical factor that affects the stability of ultra-high dump. The soil particles of different size have no sorting and random distribution, which leads to the initial fabric of sample grain uncontrolled in the laboratory test of coarse-grained soil, therefore, only relying on the laboratory testing is difficult to obtain the reliable strength parameters of coarse-grained soil. Based on Cellular Automata method, combining the laboratory triaxial tests of coarse-grained soil developed the HHC-CA model which generated the coarse-grained soil samples of different initial fabric of grain to characterize the heterogeneous and random distribution of coarse-grained soil grain group. Then by means of FLAC3D, conducting triaxial numerical simulation tests of coarse-grained soil and discussing the relationship between the gravel contents of samples shear band and samples and internal friction angle. Moreover, the shear strength model for different coarse-grained contents is established. Numerical simulation results indicated that the relationship between internal friction angle of coarse-grained soil and gravel contents of samples shear band were increasing function in the same size grading. According to the increasing of samples gravel contents, the internal friction angle might reduce, but the mean internal friction angle significantly increased with the increment of samples gravel contents.

scholarly journals A frost heave model of unsaturated coarse-grained soil considering vapour transfer

2020 ◽  
Vol 195 ◽  
pp. 02017
Author(s):  
Jianlong Liu ◽  
Jidong Teng ◽  
Sheng Zhang ◽  
Daichao Sheng
Keyword(s):  
High Speed ◽  
Coarse Grained ◽  
Frost Heave ◽  
Test Results ◽  
Proposed Model ◽  
Laboratory Test Results ◽  
Frost Depth ◽  
Lens Formation ◽  
Coarse Grained Soil ◽  
Coarse Soil

Substantial frost heave has been observed in coarse fills in high-speed railway embankments. These coarse fills have low fine contents and very low water content. The groundwater table is located below the coarse fills. The coarse fills were considered not susceptible to frost heave. Recent experimental results in the literature showed that vapour transfer has a considerable influence on the frost heaving of unsaturated coarse-grained soil. But vapour transfer has been rarely considered in the modelling of frost heave. This study presents a new frost heave model with considering vapour transfer and its contribution to ice formation. The rigid ice theory is applied to initiate an ice lens formation in the frozen fringe. An updated computer programme PCHeave is developed by considering the vapour transfer. The results of the proposed model are compared with laboratory test results, which show reasonable agreement. The prediction of the model agrees well with the measured frost heave and frost depth, which indicates that the proposed model can reasonably reflects the process of frost heave in unsaturated coarse soil.

The influence of compaction energy on frost-heave characteristics of coarse-grained soil

2019 ◽  
Vol 100 (2) ◽  
pp. 897-908 ◽  
Author(s):  
Fengyun Liu ◽  
Zhushan Shao ◽  
Rujia Qiao ◽  
Shuocheng Zhang ◽  
Wen-Chieh Cheng
Keyword(s):  
Coarse Grained ◽  
Frost Heave ◽  
Compaction Energy ◽  
Coarse Grained Soil

Rheology of hydrocarbon gels

1950 ◽  
Vol 200 (1061) ◽  
pp. 183-188 ◽  
Keyword(s):  
Mechanical Properties ◽  
Experimental Measurement ◽  
Theoretical Basis ◽  
Continuous Media ◽  
Point Of View ◽  
Coarse Grained ◽  
Testing Instrument ◽  
Fine Grained ◽  
Mineral Oils ◽  
Space And Time

Hydrocarbon gels contain a number of materials, such as rubber, greases, saponified mineral oils, etc., of great interest for various engineering purposes. Specific requirements in mechanical properties have been met by producing gels in appropriately chosen patterns of constituent components of visible, colloidal, molecular and atomic sizes, ranging from coarse-grained aggregates, represented by sponges, foams, emulsions, etc.; to fine-grained and apparently homogeneous ones, represented by optically clear compounds. The engineer who has to deal with the whole range of such materials will adopt a macroscopic point of view, based on an apparent continuity of all the material structures and of the distributions in space and time of the displacements and forces occurring under mechanical actions. It has been possible to determine these distributions in the framework of a comprehensive scheme in which the fundamental principles of the mechanics of continuous media provide the theoretical basis, and a testing instrument of new design, termed Rheogoniometer, the means of experimental measurement (Weissenberg 1931, 1934, 1946, 1947, 1948).

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
Sign in / Sign up

Export Citation Format

Share Document