砂浆抗剪强度参数的试验研究

A Test Study on Shearing Strength Parameters of Mortar

本文采用直剪方式对砂浆试块进行了抗剪断试验研究,得到了它的抗剪强度参数和若干剪应力一位移全程曲线,并就法向应力对残余强度的影响以及残余强度与峰值强度的关系作了初步探讨。结果表明,砂浆试块剪断以后,内聚力基本消失,内摩擦角几乎不变,残余强度及其与峰值强度的比值随着法向应力的增加而增加。

A Shearing test study was conducted on several mortar blocks , from which the author got the shearing parameters and some complete curves of shearing stress-displacement. Also , in this paper the author analyzed the influence of normal stress on ahearing strength and the relationship between residual strength and peak strength. The outcome indicates that the parameter C will lose itsfunction while another parameter Ф will continue its workafter the mortar blocks are clipped , and that both residual strength and their ratio to peak strength have aninereasing trend with normal stress.