通过缓凝三元复合制成缓凝高效减水剂，延长初凝时间至20小时以上，并且对混凝土后期强度无副作用。
Mix with setretarder could make compound dispersants setretarder superplasticizer which could extend initial setting time up to 20h and no negative effect on late compressive strength.
研究了木素磺酸钙的氧化磺化等复合改性工艺，合成了以木素磺酸钙为主要原料的低成本缓凝高效减水剂GCL1。
A low cost retarded high range water reducing agent GCL1 was prepared via oxidation and sulfonation modification using calcium lignosulfonate as primary raw material.
试验结果表明，复合使用高效减水剂和缓凝剂，能有效控制混凝土坍落度经时损失。
Experiment results showed that compound use of efficient water-reducing admixture and retarding agent can efficiently control the pumped concrete slump loses through time.
采用了工业化的不饱和聚醚多元醇为反应单体，合成了一种高减水率，长缓凝时间的新型聚羧酸系高效减水剂。
A kind of unsaturated polyether was adopted as the reactive monomer, synthesis a new type of polycarboxylate superplasticizer with high dispersibility and long retention characters.
掺加不同种类的缓凝剂均不同程度促进高效减水剂提高减水作用，并且对减水作用的提高程度反映了该缓凝剂与萘系高效减水剂和水泥三者的适应性差别。
By adding different retarders, the water reducing effect is improved in varied degrees, which reflects the difference of its adaptability to naphthalene water-reducing agent and cement.
掺加不同种类的缓凝剂均不同程度促进高效减水剂提高减水作用，并且对减水作用的提高程度反映了该缓凝剂与萘系高效减水剂和水泥三者的适应性差别。
By adding different retarders, the water reducing effect is improved in varied degrees, which reflects the difference of its adaptability to naphthalene water-reducing agent and cement.
应用推荐