混凝土冻结时,随着发生体积增大9.06%的同时.存在于其中的水产生相变,在混凝土硬化的早期阶段,几乎所有水都变成冰:水的化学结合量不大,由于还没有形成混凝土的微孔结构,靠毛细管的作用水的明显过渡冷却是不可能的.接着而来的,这种混凝土强度可能比没有冻结的混凝土低15—40%同时,有相当多的资料阐述了关于混合物浇注后,混凝土一次直接冻结,以后在有利的养护条件下,对它的强度没有影响或有良好的影响.虽然若干假定[1],说明这 When the concrete freezes, as the volume increases by 9.06%, the water present in it undergoes a phase change. In the early stages of hardening of the concrete, almost all of the water turns into ice: the chemical binding of water is not large, as there is no The formation of concrete microporous structure, by the capillary action of the water is not obvious in the transitional cooling. Next, the strength of this concrete may be 15-40% lower than unfrozen concrete at the same time, there is a considerable amount of information elaborated After the mixture is poured, the concrete is directly frozen at one time, and later under favorable curing conditions, it has no influence on or has a good influence on its strength. Although several assumptions [1] indicate this