不同水胶比下钢渣粉与陶瓷抛光砖粉对水泥水化性能的影响  

Effect of Steel Slag Powder and Ceramic Polishing Powder on Cement Hydration at Different Water Binder Ratio

作　　者：王功勋[1] 谭琳[1] 王佳骅 曹聪[1] 

机构地区：[1]湖南科技大学土木工程学院,湖南湘潭411201

出　　处：《硅酸盐学报》2014年第2期190-197,共8页Journal of The Chinese Ceramic Society

基　　金：湖南省教育厅资助项目(10K026)

摘　　要：以工业废弃物钢渣、陶瓷抛光砖粉为辅助胶凝材料,通过对单掺钢渣粉及陶瓷抛光砖粉水泥在不同水胶比下的强度、化学结合水、孔溶液碱度及孔微观结构的测定,研究了在不同水胶比情况下,钢渣粉、陶瓷抛光砖粉在复合胶凝材料中对水泥水化性能的影响。结果表明:在相同龄期下,水胶比的改变对掺钢渣粉水泥的抗压强度影响最为显著,其次是掺抛光砖粉水泥,而对纯水泥的影响程度最小;在相同掺量、相同龄期条件下,单掺钢渣粉、陶瓷抛光砖粉水泥试样的化学结合水含量均随水胶比的减小而减小,试样的孔溶液pH值和抗压强度则随水胶比减小而增大;水化体系微观结构随水胶比的减小变得更为致密。不论水胶比大小,掺钢渣粉水泥水化体系的孔溶液pH值和化学结合水含量较掺陶瓷抛光砖粉水泥的高,但其抗压强度却低于掺陶瓷抛光砖粉水泥试样,这表明抛光砖粉的火山灰活性及微集料填充效应较钢渣粉要强,其微观结构较为致密。Composite cementitious materials were prepared by Portland cement and supplimentary cementitious materials-steel slag powder （ SS） and ceramic polishing powder （PP）. The effects of water-binder ratio and content of SS and PP on the compressive strength, chemical combined water content, pore solution pH value and microstructure were investigated. The results show that the most significant effect of water-binder ratio on compressive strength is SS-cement, secondly it is PP-cement and the last is Portland cement at the same hydration age. Chemical combined water content of SS-cement and PP-cement decreases with decreasing the water-binder ratio, at the same content of SS and PP and the same hydration age. Also, the pore solution pH value and the compressive strength increase with decreasing the water-binder ration. Microstructure of various cement hydration systems become more dense with decreasing the water-binder ratio. The pore solution pH value and chemical combined water content of SS-cement are higher than those of PP-cement, but the compressive strength is lower than that of PP-cement. The pozzolanie activity and the filling efficient of micro-aggregate of PP is higher than those of SS.

关 键 词：钢渣粉 陶瓷抛光砖粉 水胶比 强度 化学结合水含量 孔溶液碱度 

分 类 号：TU528[建筑科学—建筑技术科学]