Abstract：The cement mortar of four strength grade ( M5, M10, M15, and M20) is investigated to explore the effect of various contents of stone powder to the compressive strength, the loss rate of compressive strength, and quality in this study, according to the freeze-thaw corrosion of 0, 20, 40, and 60 cycles under identical conditions. The test results show that the best stone powder content of M5 cement mortar is 10% ~ 15%, that the best stone powder content of cement mortar M10 and M15 is 10% or so, and that the best stone powder content of cement mortar M20 is 15% ~ 20%.

Keyword：cement mortar;freeze-thaw cycle;stone powder;compressive strength;mass loss;