Details

Autor(en) / Beteiligte

• Xue, Kaixi
• Wang, Shengfu
• Hu, Yanxiang
• Li, Mingdong

Titel

Creep Behavior of Red-Clay Under Triaxial Compression Condition

Ist Teil von

• Frontiers in earth science (Lausanne), 2020-01, Vol.7

Ort / Verlag

Frontiers Media S.A

Erscheinungsjahr

2020

Link zum Volltext

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• To investigate the shear strength and creep behavior of red-clay, laboratory experiments were conducted and the experimental results were compared with available theoretical creep models. Based on the consolidated drained (CD) triaxial tests results, internal friction angle and cohesion of the red clay soil were 21.5° and 61.1 kPa, respectively. Three different confining pressures were set up to conduct the creep tests using multi-stage loading. The overall creep curves exhibited stepped stress-strain behavior. The creep behaviors were remarkably different from the soils tested with three distinct confining stresses. The post-creep failure mode of all the red clay samples exhibited drum shaped parabolic bulging with predefined shear planes. The experimental results were compared with three different types of creep models that used in practice. Among all of this verified results, Burger’s model behaved betted than other models when fitting with the data collected from the experiment. An experimental result based empirical equation has also been developed which fits well with the experimental results obtained from the tested red clay samples. The results of this study will be helpful to evaluate the long-term shear strength and deformation of red clays subjected to various structural loadings.