C60高强混凝土制备超大直径盾构管片研究与应用  

Research and application on high-performance concrete of C60 for large-diameter shield segment

作　　者：张伯阳 

机构地区：[1]中交隧道工程局有限公司,北京100088

出　　处：《混凝土》2013年第1期133-134,138,共3页Concrete

摘　　要：结合实际工程项目,提出研制用于盾构隧道衬砌管片的C60高性能混凝土。首先通过试验确定混凝土的水胶比为0.3,砂率为34%;随后在该配合比基础上提高矿粉和粉煤灰掺量,优化制预制衬砌管片的混凝土配合比。试验结果表明:掺合料取代率36%,矿粉和粉煤灰按1∶1比例复掺的混凝土性能最优,完全满足标准规定。A highperformance concrete of C60 for shield tunnel lining segment through practical projects was introduced.First the wa terbinder ratio was determined 0.3 and sand ratio 34% by experiments ,based on which the mixture amount of slag powder and flyash was increased afterwards to optimize the concrete mix ratio of the shield segment.And test result showed the concrete, the admixture replace ment rate of which was 36 percent and which was mixed at 1：1 proportion of slag powder and flyash, got the best performance and fully met the standard.

关 键 词：混凝土 超大直径盾构管片 强度 

分 类 号：TU528.7[建筑科学—建筑技术科学]