首页 | 本学科首页   官方微博 | 高级检索  
     检索      

骨胶对建筑石膏水化和硬化体微结构的影响
引用本文:彭家惠,谢厚礼,陈明凤,张建新,瞿金东.骨胶对建筑石膏水化和硬化体微结构的影响[J].重庆大学学报(自然科学版),2006,29(12):65-67,71.
作者姓名:彭家惠  谢厚礼  陈明凤  张建新  瞿金东
作者单位:重庆大学,材料科学与工程学院,重庆,400030;重庆大学,材料科学与工程学院,重庆,400030;重庆大学,材料科学与工程学院,重庆,400030;重庆大学,材料科学与工程学院,重庆,400030;重庆大学,材料科学与工程学院,重庆,400030
摘    要:研究了大分子类缓凝剂骨胶对建筑石膏凝结时间、强度、液相离子浓度与过饱和度,以及二水石膏晶体形貌和硬化体孔结构的影响,分析了石膏强度损失的内在原因.结果表明:骨胶对建筑石膏有显著的缓凝作用,它对建筑石膏强度的负面影响大大低于小分子类缓凝剂;骨胶对二水石膏晶体形貌和硬化体孔隙率影响较小,但使二水石膏晶体尺度增大,孔径分布粗化,这正是石膏强度降低的内在原因.

关 键 词:石膏  缓凝剂  晶体形貌  孔结构
文章编号:1000-582X(2006)12-0065-03
收稿时间:2006-08-16
修稿时间:2006-08-16

Influence of Macromolecule-type Retarders on the Hydration and Microstructure of Hardened Paste
PENG Jia-hui,XlE Hou-fi,CHEN Ming-feng,ZHANG Jian-xin,QU Jin-dong.Influence of Macromolecule-type Retarders on the Hydration and Microstructure of Hardened Paste[J].Journal of Chongqing University(Natural Science Edition),2006,29(12):65-67,71.
Authors:PENG Jia-hui  XlE Hou-fi  CHEN Ming-feng  ZHANG Jian-xin  QU Jin-dong
Institution:College of Material Science and Engineering, Chongqing University, Chongqing 400030, China
Abstract:Influence of one macromolecule-type retarder bone glue on the setting time, strength, ion concentration in liquid phase and supersaturation degree, crystal morphology of dehydrate and microstructure of hardened paste of building gypsum is investigated. Furthermore, internal cause of strength loss of building gypsum with addition of retarder is analyzed, The results indicate that bone glue could retard the hydration of building gypsum markedly, but its negative influence on the strength of building gypsum is far lower than that of low molecule-type retarders. Bone glue has a minor effect on crystal morphology of dehydrate and porosity of hardened paste, but it causes the large crystal size and coarsening of pore size distribution of hardened gypsum paste, which is the very intrinsic reason of strength loss of building gypsum.
Keywords:gypsum  retarder  crystal morphology  pore structure
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《重庆大学学报(自然科学版)》浏览原始摘要信息
点击此处可从《重庆大学学报(自然科学版)》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号