Freezingandthawingtest shows that the figuration and cross-section of cement-based materials (paste, mortar and concrete) are different after they damage because of their different pore structures.
This paper expounds origin and mechanism of concrete of freezingandthawing destroy. The test result validates that silicon powder have great impact on concrete frost resistance.
阐述了混凝土冻融破坏的原因、机理，并通过实验验证了硅粉对混凝土抗冻性能的影响。
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In this article, it has made a research of the quality of an early-stage setting ordinary concrete undergoing a freezingtest or repeated freezingandthawingtest.