优化水工大体积混凝土抗裂性能之原材料选择

Selection of Raw Materials for Optimization of Crack Resistance of Mass Concrete of Hydraulic Structures

水工大体积混凝土水化热高、收缩率大等问题一直是设计和施工的技术难点,通过对混凝土原材料包括水泥、粉煤灰、减水剂等进行试验研究和综合分析,以控制和延缓混凝土水化热的发展过程为标准,提出了防止大体积混凝土裂缝的混凝土原材料选择的几点技术措施。

Design and construction of mass concrete with high hydration heat and large shrinkage in hydraulic structures are an challenging task.Based on experiment study and comprehensive analysis on raw materials,including cement,fly ash and water reducing agent,for the purpose of controlling and retarding development of concrete hydration heat,some technical measures for selecting raw materials which protect mass concrete from cracking are presented.