片筏基础大体积混凝土裂缝控制

裂缝是大体积混凝土的主要质量缺陷。内外温差大是产生裂缝的主要原因。防止混凝土产生裂缝，首先，减少水泥用量，降低混凝土的入模温度，加配榴构造筋；其次，采用分段分层方法浇筑，加强振捣，及时清除泌水；最后，加强早期养护，加强测温监控。

Cracking controlling of wooden foundation of mass concrete

Cracking is the main shortcoming in the mass concrete.The big temperature difference is the key reason for cracking.To prevent the concrete cracking,first,reducing cement usage,lowering the concrete moulding temerature,and add reinforcement;second,pouring by sections and layers,vibrating and clearing water;third,strengthening the early age curing and supervision of temperature test.