大流动混凝土正交试验对其和易性影响因素研究与分析  

Research and Analysis on Influencing Factors of Workability of Large Flow Concrete by Orthogonal Test

作　　者：郝向东 王新严 邵景干 HAO Xiangdong;WANG Xinyan;SHAO Jinggan(Henan Jiaoyuan Engineering Technology Group Co.,Ltd.,Research and Development Center of Green High Performance Material Application Technology Transportation Industry,Zhengzhou 450046,China;Henan Jianyuan Highway Ancillary Facilities Engineering Co.,Ltd.,Xinxiang 453400,China)

机构地区：[1]河南交院工程技术集团有限公司绿色高性能材料应用技术交通运输行业研发中心,河南郑州450046 [2]河南建元公路附属设施工程有限公司,河南新乡453400

出　　处：《河南科技》2022年第10期55-58,共4页Henan Science and Technology

摘　　要：大流动性混凝土定义为拌和物坍落度不低于160 mm的混凝土。在混凝土工程应用中,大流动混凝土拌和物的工作性容易发生泌水、离析等不良现象,造成这些不良现象的原因有很多:水泥成分,砂石料集配、粒径、有害物质,掺和料的掺量,单位用水量,外加剂与水泥在相容性以及温湿度外界因素等。Large flow concrete is defined as the slump of the mixture is not less than 160 mm in concrete.Concrete engineering applications,the big flow the workability of concrete mixture are prone to bleeding,as well as the segregation phenomenon,there are a lot of the bad phenomena:the cement composition,the application of distribution,particle size and harmful substances,dosage of admixture,unit water consumption,additive compatibility with cement and external factors such as temperature and humidity.

关 键 词：大流动混凝土 泌水 坍落度 外加剂 掺和料 

分 类 号：TU528[建筑科学—建筑技术科学]