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.
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
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)
关键词
混凝土
粉煤灰
硅灰
矿渣
强度特性
concrete
fly ash
silica fume
granulated blgast furnace slag
compressive strength
作者简介
杨义（1968-），男，教授级高工．E-mail：jcyyy66@yahoo．com．cn
