大掺量混合材高性能混凝土的制备及强度特性  

Preparation and Strength Property of High Performance Concrete with High Volume Mineral Admixture

作　　者：杨义[1] 时圣金[1] 童张法[1] 冯庆革[1] 

机构地区：[1]广西大学化学化工学院

出　　处：《武汉理工大学学报》2007年第11期21-24,共4页Journal of Wuhan University of Technology

基　　金：教育部科学技术研究重点项目(20611);教育部留学回国基金;广西科学基金项目(桂科青0640010)

摘　　要：在固定用水量为130 kg/m3下,研究了粉煤灰、磨细矿渣和硅灰对水泥替代量为30%、50%、70%,水胶比为0.33的高性能混凝土的制备。探讨了粉煤灰、硅灰和矿渣对新拌混凝土流动性和抗压强度的影响。在低水胶比情况下,粉煤灰、磨细矿渣和硅灰大掺量复掺,可制备得到工作性良好、早期强度满足要求和后期强度有极好发展的高性能混凝土;在高效减水剂的作用下,在大掺量混合材混凝土中以硅灰、磨细矿渣取代部分粉煤灰,可以有效提高大掺量混凝土的早期强度,进一步改善新拌混凝土的工作性。The preparation of high-performance concrete with the replacement of fly ash, granulated blast furnace slag, and silica fume alternative to the weight of cement （30%, 50%, and 70% ）, water-binder ratio of 0.33 was studied under the condition of water consumption of 130 kg/m3. The influence of fly ash, silica fume and granulated blas^-furnace dag on the fresh concrete workability and compressive strength was also di^ussed. The results show that high-performance concrete, which have good workability, early strength and excellent development of final strength can be obtained when with low water-binder ratio, large amount of fly ash, granulated blast-furnace slag and silica fume replacement. Replacing silica fume, granulated blast-furnace slag to a portion of fly ash, with superplasticizer, in high volume admixture of concrete, can further improve the workability of fresh concrete and effectively raise the early strength.

关 键 词：混凝土 粉煤灰 硅灰 矿渣 强度特性 

分 类 号：TU528.31[建筑科学—建筑技术科学]