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大体积混凝土的浇筑温控如何做好？ - 工程施工 - 项目管理 - 氿上知道
返回顶部
一、通过原材料降低水泥硬化过程中的水化热，如采用矿渣水泥、掺矿渣等；
二、降低入模温度，如在搅拌砼时加冰块，用湿草袋包裹泵管；
三、加强温度监测，可采用电阻测温或预埋测温管测温；
四、加强保温，防止环境温度与砼表面出现较大的热交换而砼表面出现裂缝，防止砼表内出现温差大于25度而表面出现裂缝；
五、可加强散热，在砼内预埋循环水管，在表内温度差接近25度时，采用循环水将热量带出来。
六、监测至砼内部温度与环境温度差小于25度时方可。
控制混凝土温度的措施
1拌合混凝土时加浆或用冰将碎石冷却以降低混凝土的浇筑温度；
2在混凝土中埋设冷却水管对混凝土内部进行降温；
3规定合理的拆模时间，气温骤降时对混凝土表面进行保温，以免混凝土表面发生急剧的温度变化.