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Full-Text Articles in Geotechnical Engineering
Temperature Effect On Water Retention Capacity Of Nanning Expansive Soil And Its Microscopic Mechanism, Zhao-Tian Zeng, Zhe-Qi Cui, De-An Sun, Zhi Yao, Bin Pan
Temperature Effect On Water Retention Capacity Of Nanning Expansive Soil And Its Microscopic Mechanism, Zhao-Tian Zeng, Zhe-Qi Cui, De-An Sun, Zhi Yao, Bin Pan
Rock and Soil Mechanics
To explore the variation of water retention capacity of expansive soil at different temperatures, the calibration curves of Whatman No.42 filter paper were measured by vapor equilibrium method at 5, 25, 40 ℃ and 60 ℃, and the bilinear calibration equation considering temperature effect was established. The results show that the water retention capacity of the filter paper decreases with the increase of temperature, and the effect on the high suction section of calibration curve is weaker than the low suction section. On this basis, Nanning expansive soil is taken as the research object, and the soil-water characteristic curves of …
Evolution Characteristics Of Meso-Cracks In Expansive Soil Under Desiccating Conditions, Hao-Dong Gao, Ran An
Evolution Characteristics Of Meso-Cracks In Expansive Soil Under Desiccating Conditions, Hao-Dong Gao, Ran An
Rock and Soil Mechanics
Desiccation is the key factor causing the initiation and expansion of cracks in expansive soil. The evolution of cracks has a significant influence on the integrity of soil structure and the long-term stability and safety of the foundation. In order to investigate the evolution characteristics of dry-shrinkage cracks in expansive soil, micro-CT scanning tests were carried out on undisturbed soil samples. The 2D/3D images and characteristic parameters of soil mesocracks were obtained by using image processing technology, and the evolution of dry-shrinkage cracks was analyzed qualitatively and quantitatively. The results showed that the volumetric shrinkage characteristics of expansive soil in …