矿物细掺料对高性能混凝土流变性能的影响  

Effect of fine particles on rheological properties of high-performance concrete

作　　者：巴恒静[1] 潘雨[1] 杨英姿[1] 

机构地区：[1]哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨150006

出　　处：《哈尔滨建筑大学学报》2002年第6期50-54,共5页Journal of Harbin University of Civil Engineering and Architecture

基　　金：国家自然科学基金(50078019);哈尔滨工业大学交叉学科基金(HIT.MD2001.10)

摘　　要：研究了平均粒径0.1～11.2μm的5种不同矿物细掺料部分取代水泥对高性能混凝土流变性能的影响。其中,粉煤灰(FA)及两种细粉煤灰(FFA)以单独取代水泥的方式掺入,而矿渣(BFS)和硅灰(SF)则以三元复合胶结料的方式掺入。混凝土拌和物的流变性能由自行设计开发的BMH流变仪测试。对新拌高性能混凝土的超塑化剂掺量、流动阻力、扭矩粘度、工作性经时损失及抗泌水等性能进行了研究。指出掺不同粒径矿物细掺料的三元复合胶结料能够很好地改善高性能混凝土拌和物的工作性。The effect of various proportions of 0.1μ m to 11.2μ m particles used as partial replacements for cement on the rheological properties of high-performance concrete (HPC) was investigated. Fly ash (FA) and fine fly ash (FFA) were separately used as partial replacement for cement while concrete mixtures were made with triple-blended composite cements containing different proportions of blast furnace slag (BFS) and silica fume (SF). A self-developed rheometer was used to measure the rheological properties such as superplasticizer requirement, flow resistance, torque viscosity, and time dependent at different ages. Induced bleeding of the various concrete mixtures and the advantages of using triple -blended binders containing fine particles of various particle sizes were investigated.

关 键 词：矿物细掺料 高性能混凝土 流变学 流变仪 

分 类 号：TU528.31[建筑科学—建筑技术科学]