高强高性能混凝土可泵性评价方法研究  

Study on evaluation method of pumpability of high strength and high performance concrete

作　　者：徐亮 樊先平 赵海红 XU Liang;FAN Xianping;ZHAO Haihong(Chongqing Construction Engineering Building Materials&Logistics Co.,Ltd.,Chongqing 401122,China;Chongqing Engineering Technology Research Center of Construction Materials and Products,Chongqing 401122,China)

机构地区：[1]重庆建工建材物流有限公司,重庆401122 [2]重庆市建筑材料与制品工程技术研究中心,重庆401122

出　　处：《四川建材》2022年第7期12-13,32,共3页Sichuan Building Materials

基　　金：重庆市技术创新与应用发展专项重点项目:超高层巨型组合结构高强自密实混凝土施工关键技术研究与应用(cstc2019jscx-gksbX0041)。

摘　　要：综合分析了高强高性能混凝土的可泵性评价方法,结果表明:对于高强高性能混凝土特别是C100高强混凝土,采用盘管试验能够较为全面地反映其泵送性能,但成本较高;压力泌水试验可作为辅助性判别方法;流变仪测试方法目前更多用于理论研究。C100高强混凝土的倒筒时间为8~11 s、坍落度为230~260 mm、扩展度为620~660 mm时,其泵送性能良好,能够满足施工要求。The evaluation methods of the pumpability of high strength and high performance concrete are analyzed.The results show that for high strength and high performance concrete,especially for C100 high strength concrete,the overall pumping performance can be reflected by the coil tube test,but the cost is high;Pressure bleeding test can be used as an auxiliary discrimination method,and rheometer test method is more used in theoretical research.When the pouring time range of C100 high strength concrete is 8~11 s,the slump range is 230~260 mm,and the expansion range is 620~660 mm,the pumping performance of C100 high strength concrete is good and can meet the construction requirements.

关 键 词：高强混凝土 高性能混凝土 可泵性评价 

分 类 号：TU528[建筑科学—建筑技术科学]