混凝土在零下5度可以施工吗?

2025-04-02 00:19:36
推荐回答(4个)
回答1:

可以施工,但是需要注意以下需求:

混凝土在拌制、运输、灌筑、捣实等过程中,必须采取措施,不使热量散发过快。

当室外日平均气温连续5天稳定低于5°C的施工过程称为冬季施工。冬季气温下降,不少地区温度在0°C之下(即负温),土壤、混凝土、砂浆等所含的水分冻结,建筑材料容易脆裂,给建筑施工带来许多困难。

扩展资料

冬季抹灰有热作和冷作两种方法:

①热作法。通过提高操作时的室内温度,使抹灰砂浆在正温条件下凝固的方法。提高环境温度可用加热炉或蒸汽排管,也可用远红外线烘烤。

②冷作法。抹灰是在不作加热保温的状态下,用掺有抗冻剂的砂浆进行。此法常用于室外墙面抹灰。但不能用于靠近电源、经常处于潮湿状态及外观要求较高的工程。

不论采取何种方法,冬季抹灰必须待建筑物已沉降稳定,砌体强度已达到设计强度的20%以上,混凝土强度达到40%以上时才能进行。

参考资料来源:百度百科——冬季施工

回答2:

只要有需要,商混公司一样会送的,混凝土里加防冻剂啊。专业的商品混凝土公司干这活没问题。你只需要把工人安排好就行了。

回答3:

国家强制性标准:零下5度混凝土禁止施工。

回答4:

用防冻水泥,晚上在生火就可以了

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