桥梁钢管拱肋高强高性能混凝土配合比设计  

Mix proportion design of high strength and high performance concrete based on engineering requirement

作　　者：朱保华 ZHU Baohua(Joint Vocational and Technical College of Nanjing in Jiangsu Branch,Nanjing 211135,China)

机构地区：[1]江苏联合职业技术学院南京工程分院,江苏南京211135

出　　处：《混凝土》2018年第9期129-132,共4页Concrete

基　　金：国家自然科学基金:全组分废弃混凝土再生水泥熟料矿相匹配及烧成机理研究(51308089)

摘　　要：以某桥梁建设的工程要求为研究基础,深入探究高强高性能混凝土的配合比设计,通过对大桥拱肋C60高性能混凝土进行配合比设计和试验研究,结果表明,水灰比对混凝土强度和坍落度的影响最大,粉煤灰掺量、砂率、膨胀剂掺量影响则相对较小。根据最终确定的佳混凝土配合比,对高强高性能混凝土进行了配制,并将其应用于本项目大桥的拱肋管内混凝土灌注施工,超声波检测和敲击检查,结果显示,配制的C60管内混凝土整体密实,达到了设计要求。An important bridge based on the demand for the research on mix design of high strength and high performance concrete,through the C60 high performance concrete arch ribs of the bridge design and experimental research,with the results show that the effect of water cement ratio of concrete strength and slump,the amount of fly ash,sand ratio and expansion agent volume is relatively small.According to the concrete good final mix of high strength and high performance concrete is configured,and applied to the project of the bridge arch rib tube concrete pouring,ultrasonic testing and percussion examination,results showed that the prepared C60 tube concrete compacting,meet the design requirements.

关 键 词：高性能 高强 配合比 混凝土 C60 

分 类 号：TU528.062[建筑科学—建筑技术科学]