Experimental and Numerical Investigation of the Tensile Performance and Failure Process of a Modified Portland Cement

Abstract A better understanding of the tensile performance and failure mechanism cement paste is significant in preventing rock reinforcement failure. Therefore, this paper aims to reveal a modified Portland cement: Stratabinder HS cement. To achieve objective, split test was conducted on specimens followed by simulating numerically. The results indicated that water–cement rate significantly influenced paste. When increased from 0.35 0.42, strength declined 1.9 MPa 1.5 MPa. It also observed vertical constantly occurred regardless rate. During testing process, cracks shear occurred. increasing number specimen dependent stress state. Before reached peak, crack quantity slightly. After dramatically. loading horizontal specimen. This zone showed diamond shape. higher is, larger area zone. reached, mainly concentrated at centre finally led key factor evaluating