Freezing and thawing test 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.

冻融循环试验表明，由于净浆、砂浆和混凝土这三种水泥基材料孔结构的不同，使得其破坏时的外观和断面形状各不相同。

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This paper expounds origin and mechanism of concrete of freezing and thawing 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 freezing test or repeated freezing and thawing test.

本文研究了普通混凝土在硬化初期受到一次冻结或反复冻融后对质量的影响。

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