Journal Published Online: 29 July 2020
Volume 43, Issue 6

A Novel Local Temperature-Controlled Apparatus for Thermal Effect on Dynamic Properties of Soft Clay



To investigate the thermal effect on soft clay, a novel local temperature-controlled device is presented based on an advanced dynamic triaxial testing system. Then, a calibration study is carried out to verify the robustness and effectiveness of the designed temperature-controlled apparatus. Preliminary tests show that the developed apparatus can achieve temperature uniformity with a temperature control ranging from −16°C to 80°C with an accuracy of 0.1°C and temperature uniformity. In addition, the heating and cooling speeds are in the range of 0°C∼1.117°C/min and −0.533°C∼0°C/min, respectively. Finally, the temperature-controlled apparatus is employed to investigate the axial cumulative plastic strain and cumulative pore pressure of soft clay through cyclic triaxial tests from low temperatures to high temperatures. A negative relationship is found between the axial plastic strain and temperature. Similarly, the temperature shows a significant effect on the cumulative excess pore water pressure mainly when N > 3,000, and a negative relationship between Rus and the temperature is also found.

Author Information

Wang, Haibo
Department of Civil Engineering, Nanjing Forestry University, Nanjing, Jiangsu, China
Zhou, Changtai
Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization, Institute of Deep Earth Sciences and Green Energy, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, China Shenzhen Key Laboratory of Deep Underground Engineering Sciences and Green Energy, Shenzhen University, Shenzhen, China
Ji, Jingyu
Department of Civil Engineering, Nanjing Forestry University, Nanjing, Jiangsu, China
Pages: 15
Price: $25.00
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Stock #: GTJ20190194
ISSN: 0149-6115
DOI: 10.1520/GTJ20190194