中文摘要：

以二乙醇单异丙醇胺DEIPA、一乙醇二异丙醇胺EDIPA、N，N，N’，N’-四（2-羟基乙基）一乙二胺THEED和N，N，N’，N’-四（2-羟丙基）一乙二胺THEED为化学添加剂，研究了其对水泥水化过程、含气量及硬化浆体性能的影响及机理。结果表明：DEIPA、EDIPA能显著提高水泥砂浆各龄期强度，分别在3d和56d提高4．4％和10．4％，并促进水泥水化进程，同时其对AFt向AFm转化的加速作用能有效降低孔隙率，优化孔径分布；THEED、THPED可促进水泥水化，其引气性对砂浆早期强度增进不利，但有利于后期强度提高，同时掺量范围比DEIPA和EDIPA更宽。

英文摘要：

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.