聚羧酸系高效缓凝减水剂凝结时间之差的测定和分析  

Determination and Analysis of the Difference in the Setting Time of the Polycarboxylate-Type Efficient Retarding and Water Reducing Agent

作　　者：陈善昌 CHEN Shanchang(Guangxi Deyan Testing Technology Service Co.,Ltd.;Guangxi Cement and Building Materials Product Quality Inspection Center(Guigang);Guigang Branch of Guangxi Zhuang Autonomous Region Institute of Product Quality Inspection,Guigang,Guangxi Zhuang Autonomous Region,537100 China)

机构地区：[1]广西德彦检测技术服务有限公司 [2]广西水泥及建材产品质量检验中心(贵港) [3]广西壮族自治区产品质量检验研究院贵港分院,广西贵港537100

出　　处：《科技资讯》2024年第11期168-170,共3页Science & Technology Information

摘　　要：近年来,工程施工设计对混凝土的要求越来越高,国家对绿色建材发展的支持,混凝土外加剂的应用越来越广,聚羧酸系高效缓凝减水剂因减水率高、保坍性能好、掺量低、成本低等优点在混凝土外加剂中的产量占比连年升高。因此,为了提高建筑工程的整体质量,应该准确地测定外加剂的各项性能。而混凝土外加剂凝结时间之差的准确测定,会影响外加剂生产厂家的质量控制、预拌混凝土生产、运输和施工。通过对某种聚羧酸系高效缓凝减水剂凝结时间之差的测定与分析,提出影响因素、注意事项和结果分析,从而为混凝土外加剂凝结时间之差的检测和分析提供借鉴。In recent years,the requirements of engineering construction design for concrete are getting higher and higher,the country supports the development of green building materials,concrete admixtures are used more and more widely,and the output proportion of the polycarboxylate-type efficient retarding and water reducing agent in concrete admixtures has increased year by year because of its high water-reducing rate,good slump retention per⁃formance,low mixing amount and low costs.Therefore,in order to improve the overall quality of construction projects,the various properties of admixtures should be accurately measured,and the accurate determination of the difference in the setting time of concrete admixtures will affect the quality control of additive manufacturers,and the production,transportation and construction of ready-mixed concrete.Through the determination and analysis of the difference in the setting time of a polycarboxylate-type efficient retarding and water reducing agent,the analysis of influencing factors,precautions and results is put forward,so as to provide reference for the detection and analysis of the difference in the setting time of concrete admixtures.

关 键 词：聚羧酸系 混凝土外加剂 凝结时间 基准混凝土 受检混凝土 

分 类 号：TU528[建筑科学—建筑技术科学]