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为了加快钢渣-粉煤灰复合掺和料的开发和运用,通过考察钢渣-粉煤灰掺入水泥-聚羧酸高效减水剂体系后,浆体的初始坍落扩展度和经时损失,试验研究不同掺量的钢渣和粉煤灰对聚羧酸减水剂与水泥的相容性影响。本试验设计了分别以不同掺量的粉煤灰、钢渣以及复掺钢渣和粉煤灰与水泥对聚羧酸减水剂相容性试验,并与纯水泥与聚羧酸减水剂相容性对比分析。结果表明:与纯水泥相比,随着粉煤灰掺入比例增大拌合物与聚羧酸高效减水剂的相容性越好;混有钢渣的复合掺合料与聚羧酸高效减水剂相容性变差,原因主要是钢渣颗粒粒形为菱形,锥形度较高,空隙较多,使得自由水填充空隙,从而降低净浆流动度。
In order to speed up the development and application of steel slag-fly ash composite admixture, by investigating the initial slump expansion and the time-lapse loss of steel slag-fly ash mixed with cement-polycarboxylate superplasticizer, Experimental study of different dosage of steel slag and fly ash on the compatibility of polycarboxylate superplasticizer with cement. The experiment designed different levels of fly ash, steel slag and steel slag mixed with slag and fly ash and cement compatibility test of polycarboxylate superplasticizer, and compatible with pure cement and polycarboxylate superplasticizer Sexual comparative analysis. The results show that the compatibility of the mixture with the polycarboxylate superplasticizer is better than that of the pure cement, and the admixture with the steel slag and the polycarboxylic acid are more efficient The compatibility of the superplasticizer is deteriorated. The main reason is that the grain size of the steel slag is rhombic, the conicity is higher and the voids are more, so that the free water fills the voids and the fluidity of the paste is reduced.