脱硫石膏灌芯墙干燥时间影响因素分析  

Analysis of influencing factors on drying time of desulfurization gypsum core grouted wall

作　　者：丁杨[1,2,3] 魏永起[1,3] 周双喜[2] DING Yong WEI Yongqi ZHOU Shuangxi(School of Civil Engineering,East China University of Technology,Nanehang 330013,China School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013,China Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education,Tongji University, Shanghai 201804, China)

机构地区：[1]东华理工大学建筑工程学院,江西南昌330013 [2]华东交通大学土木建筑学院,江西南昌330013 [3]同济大学先进土木工程材料教育部重点实验室,上海201804

出　　处：《新型建筑材料》2017年第6期70-72,共3页New Building Materials

基　　金：江西省自然科学基金项目(20151BAB213023)

摘　　要：通过采用不同厚度的脱硫石膏浆样品,改变珍珠岩掺量和环境相对湿度,覆盖纸面石膏板对石膏浆体干燥蒸发过程进行实验比较分析。结果表明,脱硫石膏浆体的干燥时间与其厚度呈现非线性增长关系;珍珠岩掺量却对脱硫石膏浆体干燥行为影响较小;环境相对湿度的增加显著延长了石膏浆体的干燥时间,环境相对湿度从55%增加到75%时,脱硫石膏浆体完全干燥时间延长了近1倍;纸面石膏板的覆盖在高环境相对湿度(75%)下对脱硫石膏的干燥时间影响较小,但在低环境相对湿度(55%)下干燥时间急剧延长,可达2倍。This paper using gypsum paste samples with different thickness,by changing the content of perlite and the relative humidity of the environment＇ to compare and analyze the drying evaporation process of paper-covered plasterboard on gypsum paste. The experimental results show that the drying time of gypsum paste and its thickness presented nonlinear growth,the content of perlite has little effect on drying behavior of gypsum paste; the increase of the environmental relative humidity significantly prolongs the drying time of gypsum paste,when environmental relative humidity increases from 55% to 75%,the desulfurization gypsum paste of complete drying time prolongs nearly 1 time;plasterboard covered in high relative humidity environment （75%） has little effect on the drying time of FGD gypsum,while the drying time prolongs at low relative humidity（55%） environment,up tO 2 times.

关 键 词：脱硫石膏 干燥时间 相对湿度 

分 类 号：TU52[建筑科学—建筑技术科学] TQ177.3[化学工程—硅酸盐工业]