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一、前言减水剂是一种表面活性剂,加入混凝土中能对水泥颗粒起扩散作用,从而把水泥凝聚体中所包含的水释放出来,使水泥达到充分的水化,由于减水剂具有这种水泥表面活化作用,因此在混凝土中掺用,可减少混凝土拌合物的用水量,降低水灰比,改善混凝土和易性,提高混凝土强度和密实性,具有早强效应。能适应混凝土工程大模板施工,滑升模板施工和泵送混凝土的工艺技术要求。所以目前在建筑施工中减水剂已作为混凝
I. INTRODUCTION Water reducer is a kind of surface active agent. It can diffuse the cement particles when it is added to the concrete, thus releasing the water contained in the cement aggregates, so that the cement can achieve sufficient hydration, since the water reducing agent has This cement surface activation effect, therefore mixed with concrete, can reduce the water content of concrete mixture, reduce the water-cement ratio, improve the workability of concrete, improve the strength and compactness of concrete, and have early strong effects. It can meet the technical requirements for construction of large formwork for concrete works, sliding formwork construction and concrete pumping. Therefore, the superplasticizer is currently used as a coagulant in building construction.