聚羧酸高效减水剂复配防冻泵送剂的试验和应用

Experiment of polycarboxylate superplasticizer mixed with antifreeze pumping agent and its application

聚羧酸系泵送剂被称为第三代减水剂,它有着较萘系泵送剂明显的优点.但由于目前混凝土搅拌站对其认识的局限性,聚羧酸只在部分高强度等级预制构件生产中有所应用,而没能在搅拌站中得到普及.针对其优异的性能,着重谈论聚羧酸减水剂复配防冻泵送剂的实验以及在冬季混凝土施工中的应用.

Polycarboxylate pumping agent is known as the third-generation superplasticizer,which has more obvious advantages than naphthalene-based pumping agent.Due to the limited understanding of the current concrete mixing station,the polycarboxylate is applied only to the production of some highstrength precast members,and could not be widely used in the mixing station.Because of its excellent performance,the experiment of polycarboxylate superplasticizer mixed with antifreeze pumping agent as well as its application to winter concrete construction are discussed emphatically.