矿粉超细掺合料对地铁管片混凝土强度及耐久性影响研究  

Research Effect of Ultrafine Mineral Mixing on Strength and Durability in Subway Segment Concrete

作　　者：方坤礼 陈伟东[2] 祝惠一 

机构地区：[1]衢州市职业技术学院机电工程学院,衢州324000 [2]浙江大学现代制造工程研究所,杭州310027 [3]中联重科混凝土机械分公司,长沙410013

出　　处：《硅酸盐通报》2014年第8期1898-1901,共4页Bulletin of the Chinese Ceramic Society

基　　金：浙江省自然科学基金项目(Y13E010007);浙江省衢州市科技计划项目(20121055)

摘　　要：采用常用的搅拌预制方法制备了不同超细矿粉掺合量的地铁管片混凝土,研究了矿粉超细掺合料对地铁管片混凝土蒸养强度、24 h自养强度、后期强度及耐久性的影响。结果表明:在蒸养养护方式下,矿粉超细掺合料可提高管片混凝土强度。在模具周转率要求不高的条件下,在混凝土中掺入矿粉超细掺合料可实现管片免蒸养。掺入矿粉超细掺合料的管片混凝土其耐久性指标达到管片耐久性能的技术要求,且优于S95矿粉。In order to research, different amounts of ultraline mineral mixed in subway segment concretes were prepared. The effects of mixed subway segment concrete, as steam curing strength, 24 h auto curing, late stage strength and durability were investigated. The results showed that ultrafine mineral additive can improve the strength of segment concrete if use steam curing method. Ultraline mineral additive mixed in concrete could achieve free steam curing if the turnover of mold was less demanding. Durability of mixing concrete reached segment technical requirements and better than S95 when uhrafine mineral additive mixed in segment concrete.

关 键 词：矿粉超细掺合料 管片 强度 耐久性 

分 类 号：TU528[建筑科学—建筑技术科学]