贵州磷建筑石膏用缓凝剂的研究  

Study on retarders for phosphogypsum building plaster in Guizhou

作　　者：陈尚伟 赵友缘 葛庆梅 丛航 CHEN Shangwei;ZHAO Youyuan;GE Qingmei;CONG Hang(Guizhou Architectural Science Research&Design Institute Limited Company of CSCEC,Guiyang 550025,China;Department of Chemistry,School of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州中建建筑科研设计院有限公司,贵州贵阳550025 [2]贵州大学化学与化工学院化学系,贵州贵阳550025

出　　处：《新型建筑材料》2022年第12期114-117,共4页New Building Materials

基　　金：贵州省科技计划项目(黔科合支撑[2021]一般328);中国建筑土木工程材料重点实验室项目(CSCEC-PT-002);中建四局科技研发项目(CSCEC4B-2021-KTA-12)。

摘　　要：研究了柠檬酸、三聚磷酸钠及骨胶蛋白质缓凝剂对贵州磷石膏凝结时间和强度的影响。结果表明,骨胶蛋白质缓凝剂相较于柠檬酸和三聚磷酸钠具有更好的缓凝效果。掺加骨胶蛋白质缓凝剂时,在对磷石膏强度影响相对较小的前提下能有效延长磷石膏的凝结时间,并且掺加骨胶蛋白质缓凝剂的磷石膏硬化体具有较好的微观晶体形貌,因此,优选骨胶蛋白质作为贵州磷石膏的缓凝剂。In this paper,the effect of three kinds of retarders,including citric acid,sodium tripolyphosphate and bone glue protein,on the setting time and strength of Guizhou phosphogypsum was explored.The results showed that the bone glue protein retarder had better retarding effect than citric acid and sodium tripolyphosphate.When bone glue protein retarder is added,the setting time of phosphogypsum can be effectively prolonged under the premise of relatively small influence on the strength of phosphogypsum,and the sclerotic body of phosphogypsum mixed with bone glue protein retarder has good micro crystal morphology.Therefore,bone glue protein is preferred as the retarder for Guizhou phosphogypsum.

关 键 词：缓凝剂 贵州磷石膏 凝结时间 强度 晶体形貌 

分 类 号：TU528.042.3[建筑科学—建筑技术科学]