Fracture Criterion of Cement Mortar Subjected to Triaxial Compression

Abstract

The most general fracture criterion of cement mortar subjected to triaxial compression is experimentally obtained. The criterion is expressed in the principal stress space as a convex surface with space diagonal of its axis. The surface expands almost isotropically with an increase of hydrostatic pressure. The right sections of the fracture surface have a slightly bulged shape as compared with the equilateral triangle. The fracture criterion obtained by the authors can be approximated by Mohr's envelope of parabola.It is also found that the fracture criterion is independent of loading paths within the experimental range.

The Effect of End Restraint Condition on the Fracture Mechanism and Strength of Rock-Like Materials in Compression

“…The properties of the mortar is such that as made with a mix ratio Normal Portland cement: Toyoura sand: Water= 1.0: 2.0: 0.6 by weight and was cured in 20C water bath for four weeks. 1) In the present finite element analysis, the individual element was assumed to behave isotropically in the each stress state. (1) Failure condition…”

“…1) In the present finite element analysis, the individual element was assumed to behave isotropically in the each stress state. (1) Failure condition…”