高性能聚羧酸类保坍剂的研究与应用  

Study and application of polycarboxylate-type high performance slump-retaining agent

作　　者：张新民[1] 虞亚丽 卢建新[1] 

机构地区：[1]苏州弗克新型建材有限公司,江苏苏州215008

出　　处：《混凝土》2010年第8期76-79,共4页Concrete

摘　　要：依据减水剂的"吸附-分散"及坍落度保持机理,制备了一种具有高保坍能力的聚羧酸类保坍剂。该保坍剂具有不错的分散性,适量的与普通聚羧酸类减水剂复配后可明显改善普通聚羧酸类减水剂的坍落度保持能力,其对混凝土早期强度无不利影响,对后期强度反而有促进作用。Based on the＂absorp-disperse＂ and slump retaining mechanism,we developed a polycarboxylate-type high performance slump-retaining agent.The slump-retaining agent has fine dispersing performance,which compounded with common polycarboxylate-type water-reducer on a certain proportion,can significantly improve the slump retaining ability of common polycarboxylate-type water-reducer.Besides,the slump-retaining agent can improve the later strength,has little effect on the nascent strength.

关 键 词：聚羧酸 保坍剂 水泥适应性 

分 类 号：TU528.042[建筑科学—建筑技术科学]