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近年来,混凝土与钢筋混凝土结构的使用量日趋增加,为充分挖掘混凝土强度的潜力,提高混凝土质量,必须重视混凝土的养护工作。混凝土养护与混凝土强度密切相关,混凝土在连续不间断地湿润养护下,其强度将随着龄期的增长而增长。而混凝土强度的增长依赖于水泥水化的作用,水泥水化后的产物是产生混凝土强度的主要因素。混凝土浇灌后,如果不进行湿润养护,其表面就开始干燥,随着龄期增长,混凝土强度就停止在低龄期上。《钢筋混凝土工程施工及验收规范》(GBJ204-83)混凝土自然养护的一节中规定,在混凝土浇筑完毕后,浇水的养护日期规定为:“硅酸盐水泥、普通硅酸盐水泥和矿渣硅酸盐水泥拌制的混凝土,
In recent years, the use of concrete and reinforced concrete structures has been increasing. In order to fully tap the potential of concrete and improve the quality of concrete, it is necessary to pay attention to the maintenance of concrete. Concrete curing is closely related to the strength of concrete. Under continuous and continuous wetting of concrete, its strength will increase with age. The increase in concrete strength depends on the effect of cement hydration. The hydration of cement is the main factor in the strength of concrete. After the concrete is poured, if the wet curing is not performed, the surface begins to dry. As the age increases, the concrete strength stops at a low age. The section “Construction and Acceptance Specifications for Reinforced Concrete Construction” (GBJ204-83) specifies that, after the concrete is poured, the curing date for watering is: “Portland cement, ordinary portland cement and slag”. Portland cement mixed concrete,