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在高强度大流动性混凝土中,要想获得混凝土优异的流动性能,需掺加大减水率的聚羧酸高性能减水剂,使得混凝土中游离水的增加,从而增大混凝土的流动性。因此为了提高混凝土的工作性保持能力,本文以越溪河双线大桥工程为例,首先介绍C55大流动性泵送混凝土配合比设计,然后介绍其和易性的优化方案,最后阐述了泌水抑制剂的防泌水泌浆作用机理,从中得出泌水抑制剂也有自养护的功能,可为类似工程和施工人员提供借鉴。
In high-strength high-flow concrete, in order to obtain excellent flow properties of concrete, the need to add a large water reduction rate of polycarboxylate superplasticizer, making the free water in concrete increases, thereby increasing the fluidity of concrete . Therefore, in order to improve the workability of concrete to maintain ability, this paper takes the Yue Xixi double-track bridge project as an example, first introduces the C55 large liquidity pumping concrete mix design, and then introduces its ease of optimization program, and finally illustrates the bleeding Inhibitory secretion of water secretion mechanism of action, derived from bleeding inhibitors also have self-curing function, for similar projects and construction workers to provide reference.