Behavior of a Short Fiber Pull-out from Fiber Reinforced Cement Stabilized Soil

Abstract

Failure mechanism of short fiber-reinforced cement-stabilized soil depends on the interaction between the fiber and the cement-stabilized soil matrix. And the mechanism of fiber reinforcement is revealed by experimental studies and numerical simulations. Firstly, by using the single fiber pull-out test, the results show that the maximum tensile force of single fiber under different embedding lengths increases with the development of age. Then based on a cohesive model, a three-dimensional finite element model is established to simulate the interaction between single fiber and cement-stabilized soil. The comparisons of numerical results and experimental results reflect that viscous interface parameters have vital effects on the interaction between single fiber and cement-stabilized matrix. Introducing the proper cohesive model, numerical results agree well with the experimental results better.