钢管拱无收缩顶升泵送混凝土的研究与应用  

Research and application of the flowing concrete without shrinkage in the steel tube arch

作　　者：谢琪斌 宋志斌[2] 石军[2] 

机构地区：[1]邯郸通茂混凝土有限公司,河北邯郸056001 [2]河北工程大学水电学院,河北邯郸056021

出　　处：《混凝土》2013年第8期102-104,共3页Concrete

摘　　要：根据设计要求,输元河桥钢管拱无收缩顶升泵送混凝土的强度等级为C50,R28≥59.9 MPa,坍落度240~270 mm,6 h内基本无损失,扩展度≥600 mm,混凝土凝结后无收缩,经过试配找到合适的配合比方案,该工程顺利进行,工程经质量验收合格。According to the design requirements,the function of the flowing concrete without shrinkage in the Shuyuan Bridge＇s steel tube arch was.The intensity was C50,R 28 ≥59.9 MPa.The slump of flowing concrete was 240~270 mm,and no loss of slump in 6 hours,the divergence≥600 mm,no shrinkage of concrete.After the test,we found the appropriate proportion of the flowing concrete.The project has been completed and the quality of the project acceptance.

关 键 词：高性能混凝土 大坍落度 6 h坍落度无损 无收缩 外加剂 

分 类 号：TU528.53[建筑科学—建筑技术科学]