TESTING STUDY ON THE SWELLING MECHANICAL BEHAVIOR OF RED SANDSTONE
红砂岩膨胀力学特性试验研究

A series of tests are performed on rock rigidity servo testing system (MTS815.02) and rock odometer to study the swelling mechanical behaviors of red sandstone taken from the foundation pit of Hongshanyao Project (HSYP) in Nanjing. The interrelation of expansive force with water absorption rate and the law of expansive force with expansive strain are studied. It is concluded that the water absorption rate has a significant influence on expansive force.