硅酸盐学报2017，Vol.45Issue(8)：1113-1120,8.DOI:10.14062/j.issn.0454-5648.2017.08.09
新型链烷醇胺对水泥水化硬化的影响
Effect of New Alkanolamines on Cement Hydration and Hardening
摘要
Abstract
Diethanolisopropanolamine (DEIPA),ethyldiisopropylamine (EDIPA),N,N,N',N'-tetrakis-(2-hydroxyethyl)-ethylenediamine (THEED) and N,N,N',N'-tetrakis-(2-hydroxypropyl)-ethylenediamin(THEED) were developed as chemical additives in cement pastes.The effect of alkanolamines on the cement hydration process and hardening properties as well as air contents was investigated.The results indicate that DEIPA and EDIPA can significantly improve the strength of cement mortar at various ages (by 4.4％ and 10.4％ at 56 d,respectively) and promote the degree of cement hydration.The transformation from AFt to AFm is accelerated by DEIPA and EDIPA,effectively optimizing the pore size distribution for a lower porosity.THEED and THPED can promote the cement hydration and increase the late strength,but adverse to the early strength of mortar due to their air-entraining performance.In addition,the addition range of THEED and THPED is wider than that of DEIPA and EDIPA.关键词
链烷醇胺/水泥/水化/硬化Key words
alkanolamine/cement/hydration/hardening分类
化学化工引用本文复制引用
徐芝强,徐凯,孙晋峰,胡月阳,马素花,李伟峰,沈晓冬..新型链烷醇胺对水泥水化硬化的影响[J].硅酸盐学报,2017,45(8):1113-1120,8.基金项目
国家自然科学青年基金(No.51202109) （No.51202109）
国家863计划项目(No.2015AA034701) （No.2015AA034701）
江苏高校优势学科建设工程项目. （）
