骨料对140MPa强度等级混凝土性能的影响研究  

Effecting Research of Aggregates on Properties of Concrete with 140 MPa Strength Grade

作　　者：彭园[1] 高育欣[1] 吴雄[1] 程宝军[1] 林家超[1] 蒋佳宁[1] 贾丽莉[1] 

机构地区：[1]中建商品混凝土有限公司,武汉430070

出　　处：《混凝土与水泥制品》2015年第1期15-18,共4页China Concrete and Cement Products

基　　金：中建股份科技资助项目(CSCEC-2013-Z-31)

摘　　要：骨料种类、级配、最大粒径、粒形及砂率均能影响超高强混凝土的工作性能和抗压强度。试验结果表明，选用最大粒径为16mm且10-16mm碎石占70%的卵碎石为骨料，采取40%的砂率配制的自密实混凝土标准试块90d抗压强度能达到145.8MPa。Workability and compressive strength of ultra-high strength concrete （UHSC） can be affected by aggregate type, aggregate gradation, aggregate maximum grain size, grain shape and sand ratio. Results show that UHSC has the workability of self-compacting and achieves 145.8MPa compressive strength at 90 days when choosing pebbles whose maximum size is 16mm and with 70% content of 10-16mm in size single-particles as coarse aggregate and 40% sand ra-tio.

关 键 词：超高强混凝土 骨料 工作性能 

分 类 号：TU528.041[建筑科学—建筑技术科学]