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1自密实混凝土的技术性能及配合比1．1自密实混凝土的主要技术性能①采用传统的坍落度检测方式,自密实混凝土能够达到264mm以上的坍落度、600mm以上扩展度,并且没有离析、泌水现象的发生;②单位体积水泥量少,水化温升小,温控比较容易;③高流动性和抗分离的统一。1．2自密实混凝土的配合比为了保证自密实混凝土具有上述技术性能,自密实混凝土大量掺加粉煤灰,尽量少用水泥,并掺加了一定数量的外加剂
1 self-compacting concrete technical performance and the proportion of 1.1 self-compacting concrete main technical performance ① using the traditional slump detection method, self-compacting concrete can reach more than 264mm slump, 600mm above the expansion degree, and there is no segregation , The occurrence of bleeding phenomenon; ② small volume of cement per unit volume, hydration temperature is small, temperature control is relatively easy; ③ high liquidity and anti-separation of unity. 1.2 self-compacting concrete mix ratio In order to ensure self-compacting concrete with the above technical performance, a large number of self-compacting concrete fly ash, cement with minimal use, and the addition of a certain amount of admixture