硫酸钠与聚羧酸减水剂复配对混凝土性能的影响研究.pdfVIP

学兔兔 中国科技核心期刊 杆鬼建蟓 硫酸钠与聚羧酸凛水剂复配劝 混凝土胜簇硇影响研穷 李萍，周转运，蔡其全，陈军超，杨钊，李薇，邓素华 (中国十九冶成都建设有限公司，四川 成都 611730) 摘要：采用早强剂硫酸钠与聚羧酸减水剂复配，研究其在低温环境下对混凝土性能的影响，为开发早强型聚羧酸减水剂进行探 索。试验结果表明，采用硫酸钠与聚羧酸减水剂复配使用可以有效提高混凝土在低温环境下的早期强度，同时在一定掺量条件下对 聚羧酸减水剂的减水、保坍效果影响不大。当聚羧酸减水剂掺量为1．8％时，硫酸钠的适宜掺量为0．5％～0．7％。 关键词：聚羧酸减水剂；早强剂；硫酸钠；复配；混凝土性能 中图分类号：TU528．042．2 文献标识码：A 文章编号：1001—702x(2O14)o9—0038—02 Effect of complex formulation of sodium sulfate and poly carboxylic acid water reducing agent on performances of concrete ￡J Pf凡g，ZHOU Zhuanyun，CAI Qiquan，CHEN Junchao，YANG Zhoo，LI Wei，DENG Suhua (Chen gdu Construction Co．Ltd．，MCC19，ChefIgdu 611730，Sichuan，China) Abstract：In this paper，through the complex of poly carboxylic acid water reducing agent with early strength sodium sulfate， the effect on the performance of concrete under low temperature was studied for the development of early strength poly carboxylic acid water reducing agent．Test proved that complex of sodium sulfate and poly carboxylic acid water reducing agent can effectively improve early strength of concrete at low temperature，and，at the same time，in a certain content，it had little influence 0n the water reducing effect and collapse retention effect of poly carboxylic acid water reducing agent．When the content of poly earboxylic acid water reducing agent is 1．8％，the suitable dosage of sodium sulfate is O．5％一0．7％． Key words：poly carboxylic acid water reducing agent；early strength agent；sodium sulfate；complex formulation；concrete perform ance