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建筑工程施工怎样正确选用水泥,是一项十分重要的工作。选用水泥品种时,应全面考虑工程性质、所处环境、施工条件和水泥特性。矿渣水泥在工业与民用建筑中的使用非常广泛,其优点是水化热较小,耐热性好,适用于大体积混凝土结构和高温车间混凝土结构,但早期强度低,凝结硬化中对温、湿度变化较为敏感。因此,冬期施工中,容易产生混凝土强度达不到设计要求的严重质量事故。如某工程采用425号矿渣硅酸盐水泥,施工气温在-4℃左右,用于楼
How to correctly use cement in construction projects is a very important task. When selecting cement varieties, the nature of the project, its environment, construction conditions and cement properties should be fully considered. Slag cement is widely used in industrial and civil buildings. Its advantages are low heat of hydration and good heat resistance. It is suitable for large volume concrete structures and high temperature shop concrete structures, but its early strength is low, and it is difficult for the concrete to harden during hardening. Humidity changes are more sensitive. Therefore, in winter construction, severe quality accidents where the strength of concrete does not meet design requirements are likely to occur. If a project uses No. 425 slag Portland cement, the construction temperature is about -4°C, which is used for building.