Abstract:
The strength variation of expansive mudstone remolded samples was studied by indoor tests after water swelling under different initial states and pressures.The research results show that the cohesion of remolded expansive mudstone increases firstly and then decreases with the raising of moisture content.The cohesive force will peak when the moisture content is about 18% after water absorption saturation.The cohesion and the internal friction angle of the remolded expansive mudstone increase with the raising of overlying pressure,and their relationship approximately follows a power function.