新型聚羧酸接枝保坍剂的合成与性能研究
New Building Materials（2012）
Abstract
介绍一种新型聚羧酸接枝保坍剂(JL-PC)的合成,研究了该保坍剂在混凝土中的使用效果。结果表明,与单掺减水剂(HS-1)的混凝土相比,复掺减水剂(HS-1)和保坍剂(JL-PC)的混凝土在保坍性能上具有明显的优势。尤其当保坍剂JL-PC掺量为水泥用量的0.09%时,混凝土的各项性能达到最佳:减水率达31.9%,泌水率降至0.4%,坍落度达到25.9 cm,60 min内坍落度基本无损失;3、7、28 d抗压强度及抗压强度比也达到最大。
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Key words
compound mix,grafted copolymerization,performance,slump retaining agent,water reducer
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