Study on size effect of mechanical properties of cement-based grouting material
At present,the selection of specimen size is not uniform in the process of testing the mechanical properties of grouting materials.In order to reduce the test error of grouting material mechanical properties,three grades of cement-based grouting materials are molded into three sizes of specimens to test the mechanical properties,and the influence law of size effect on mechanical properties of cement-based grouting materials is studied.The results show that there is a significant size effect in the mechanical properties test results.The larger the size,the smaller the mechanical properties result.The lower the strength,the more significant the size effect.There is a regular conversion coefficient between different sizes within the same strength grade range.
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