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泵送混凝土不仅能改善混凝土的施工性能,对薄壁密筋结构少振捣或不振捣施工,具有提高抗渗性、改善耐久性特点。同时,泵送混凝土骨料级配的限制,胶凝材料的大量使用,产生大量的水化热,造成温度裂缝普遍存在,在一定程度上影响结构的抗渗性和耐久性,应当引起足够的重视。建筑工程施工过程中,本文主要阐述泵送混凝土施工中温度裂缝存在的问题并进行原因分析,提出控制和防止温度裂缝的有效措施,提高混凝土浇筑质量。
Pumping concrete can not only improve the construction performance of concrete, the thin-walled tendon structure less vibration or vibration pound construction, with improved impermeability, improve durability characteristics. At the same time, pumping concrete aggregate grading restrictions, the massive use of cementitious materials, resulting in a large number of hydration heat, resulting in the prevalence of temperature cracks, to some extent affect the impermeability and durability of the structure should be sufficient Pay attention. In the process of construction, this paper mainly elaborates the problems of temperature cracks in pumping concrete construction and analyzes the causes, puts forward effective measures to control and prevent temperature cracks and improve the quality of concrete pouring.