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混凝土养护的目的是什么?自然养护应符合哪些要求?

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正确答案:

混凝土养护的目的是创造一个合适的温度和湿度的环境。

自然养护应符合下列规定:

⑴在混凝土浇筑完毕后,应在12h以内加以覆盖和浇水;

⑵浇水养护时间: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,不得少于7d,掺用缓凝型外加剂或有抗渗要求的混凝土,不得少于14d;

⑶浇水次数应能使混凝土处于湿润状态;

⑷养护用水应与拌制用水相同。

答案解析:

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