通过抗压强度、水化热、压汞仪、X射线衍射仪、热重分析仪和扫描电镜等，研究了三异丙醇胺（TIPA）对钢渣水泥体系力学性能和水化特性的影响.结果表明：随着TIPA掺量（0.03%~0.09%）的增加，钢渣水泥体系的抗压强度提高，7、28 d抗压强度分别提升了35.1%~37.9%和23.8%~35.7%；掺加TIPA促进了钢渣水泥体系的水化反应和钢渣的火山灰反应，进而加速了水化硅酸钙凝胶、三硫型水化硫铝酸钙和单硫型水化硫铝酸钙等水化产物的形成；掺加TIPA降低了试件的孔隙率，0.06%掺量的TIPA使7、28 d龄期试件的总孔体积分别减少了44.58%和21.77%.

The influences of triisopropanolamine（TIPA） on the mechanical properties and hydration characteristics of cement-steel slag system were investigated through compressive strength， hydration heat， mercury porosimeter， X-ray diffractometer， thermal analyzer and scanning electronic microscope. The results show that the compressive strength of the cement-steel system increases with the rising of TIPA dosages（0.03%-0.09%）， which is enhanced by 35.1%-37.9% and 23.8%-35.7% at 7 d and 28 d， respectively. The hydration reaction of the cement-steel system and the pozzolanic reaction of the steel slag are promoted with the addition of TIPA， which in turn accelerates the formation of hydration products such as calcium silicate hydrate gels and ettringaite. The porosity of the specimen also decreases with the incorporation of TIPA， and 0.06% TIPA makes the total pore volume reduce by 44.58% and 21.77% at 7 d and 28 d， respectively.

TQ172

“十四五”湖北省优势特色学科（群）项目（2023D0503）；硅酸盐建筑材料国家重点实验室（武汉理工大学）开放基金资助项目（SYSJJ2022-20）；湖北省建设科技计划项目（厅头［2023］1656号-075）；湖北省青年科技人才专项（2023DJC182）