有机防水剂对α型半水石膏性能的影响  

Effect of organic waterproofing agent on performance of α-Semi-hydrated gypsum

作　　者：阮长城[1,2] 刘立明[1,2] 黄应平[1,2] 黄绪泉[1,3,2] 

机构地区：[1]三峡地区地质灾害与生态环境湖北省协同创新中心,湖北宜昌443002 [2]三峡库区生态环境教育部工程研究中心(三峡大学),湖北宜昌443002 [3]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《新型建筑材料》2014年第8期42-46,共5页New Building Materials

基　　金：国家高技术研究发展计划(863计划)项目(2012AA06A111-4)

摘　　要：通过三乙醇胺、聚乙烯醇和液体石蜡对α型半水石膏性能影响的正交实验,制备出能提高α型高强石膏耐水性的复合防水剂。结果表明:TEA掺量0.227%、PVA溶液掺量0.227%、液体石蜡乳液掺量0.909%时,可制得7 d软化系数为0.468、吸水率20.42%的高强耐水石膏样品;添加复合有机物防水剂后,石膏晶体表面包覆1层薄膜,阻断了水直接对石膏样品的侵蚀,提高了石膏样品的软化系数,减小吸水率。The composite waterproofing agent,which could improve the water resistance property of α-type high-strength gypsum was prepared by an orthogonal experimental design of three organic waterproofing agents include triethanolamine,polyvinyl alcohol and paraffin wax.The results showed that：when TEA dosage was 0.227％,PVA content was 0.227％,and the content of liquid paraffin wax was 0.909％,high-strength and water resistance gypsum samples could be obtained,its 7 days softening coefficient was 0.468,water absorption rate was 20.42％.After adding compound organic waterproofing agents,gypsum crystals was coated with a film,blocking the direct erosion on gypsum samples of water,increasing the softening coefficient of gypsum samples and reducing its water absorption.

关 键 词：Α型半水石膏 有机防水剂 软化系数 

分 类 号：TU572[建筑科学—建筑技术科学]