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对一些普通混凝土的抗冻性能的研究,相关报道还很少见,尤其是一些已建工程,设计之初没有考虑混凝土抗冻要求,混凝土强度偏低,而这些建筑物在实际使用过程中,由于环境气候的影响,或多或少存在混凝土冻融破坏,混凝土强度在冻融循环反复作用下已发生变化。因此,研究普通混凝土特别是低标号混凝土在冻融作用下的性能有着非常重要的现实意义。混凝土抗冻性的标准,目前国内外大致可分为两种模式,一种是以美国为代表的基本统一制模式,一种是以原苏联为代表的等级制模式。这两种模式中,确定混凝土抗冻性的试验方法
Some ordinary concrete frost resistance research, the relevant reports are rare, especially some of the projects have been built, the design did not consider the beginning of the concrete antifreeze requirements, concrete strength is low, and these buildings in the actual use of the process, Due to the influence of environment and climate, there is more or less the freeze-thaw damage of concrete, and the concrete strength has changed under the repeated action of the freeze-thaw cycle. Therefore, it is of great practical significance to study the performance of ordinary concrete, especially low-grade concrete under the effect of freeze-thaw. Frost resistance of concrete standards, at present can be divided into two modes at home and abroad, one is the United States represented by the basic unified system model, one is the former Soviet Union as the representative of the hierarchical system. In both modes, the test method to determine the frost resistance of concrete