预拌泵送混凝土施工中裂缝控制措施

Crack control measure in pre-mixed pump-carrying concrete construction

就预拌混凝土较以往现场拌制混凝土出现裂缝概率高这一现象,从控制混凝土自身收缩、配制微膨胀混凝土、控制混凝土干缩裂缝等几方面阐述了预防泵送混凝土裂缝的主要措施,从而保证混凝土的施工质量。

According to the circumstance of higher crack probability in pre-mixed concrete than in mix-in-situ concrete, the author illustrates main measures to prevent pump-carrying concrete crack from controlling concrete self-shrink, confecting micro-swelling concrete, and controlling concrete dry-shrinking crack, which to ensure the construction quality of concrete.