大体积混凝土筏板基础温度裂缝控制

Control Strategy of Base Temperature Crack of Large Concrete Raft Plate

从基本构成的角度来讲,大体积混凝土包含了砂石骨料、纯水、水泥与其他材料,在养护硬化与均匀搅拌的基础上才能构成混凝土。因此对大体积的混凝土,结构裂缝是很难彻底避免的;同时,对筏板基础具体在开展施工时也应密切关注温度裂缝。具体在施工中,应明确筏板基础与大体积混凝土引发裂缝的根源所在,在此前提下综合运用混凝土保湿与保温的手段和措施。混凝土施工尤其有必要控制温度裂缝,进而在最大限度内确保筏板基础符合稳定性的指标,提升混凝土建筑物本身的质量。

From the point of view of the basic structure, the mass concrete contains the aggregate, pure water, cement and other materials. Therefore, for the large volume of concrete, structural cracks are difficult to avoid completely. At the same time, for the raft foundation concrete in the construction should also pay close attention to temperature cracks. In the concrete construction, it is necessary to make clear the origin of the crack of the raft foundation and mass concrete, under the premise of the comprehensive use of concrete moisture and heat preservation means and measures. It is necessary to control the temperature cracks in concrete construction, so as to ensure the stability of the raft foundation in the maximum.