免煅烧脱硫石膏的改性研究  

Modification Research on the Free of Calcining Desulfurized Gypsum

作　　者：薛力梨[1] 刘红飞[1] 蒋元海[1] 

机构地区：[1]嘉兴学院建筑工程学院,浙江嘉兴314001

出　　处：《嘉兴学院学报》2013年第6期96-99,共4页Journal of Jiaxing University

基　　金：2012年度浙江省自然科学基金(LY12E08013)

摘　　要：采用免煅烧脱硫石膏为主要原材料,粉煤灰、矿渣微粉为掺合料制备一种新型石膏基胶结材料.考察了矿物掺合料的比例及外加剂对该胶凝材料的凝结时间、抗折强度、抗压强度的改性效果.结果表明:粉煤灰与矿渣微粉以7∶8比例复合时,脱硫石膏基胶凝材料凝结时间最短;早强剂和减水剂以5∶3复合,对脱硫石膏基材改性效果最好.The new desulfurized gypsum--cement compound cementing material was prepared with free of calcining desulfurized gypsum as main raw material, and fly--ash and mineral powder as admixture. Its setting time and strength was studied with activating agent and proportions of admixture. The results showed that the shortest setting time was based on the 7 ： 8 fly--ash to mineral powder ratio; the best modification result was gained when the ratio of early strength agent and water reducer was 5 ： 3.

关 键 词：脱硫石膏 粉煤灰 矿粉 强度 凝结时间 

分 类 号：TU5[建筑科学—建筑技术科学]