蒸养条件下复合胶凝材料水化过程(英文)  

HYDRATION PROCESS OF COMPOUND CEMENTITIOUS MATERIALS UNDER STEAM CURING CONDITION

作　　者：蒋正武[1] 徐海源[1] 王培铭[1] 龙广成[2] 谢友均[2] 

机构地区：[1]同济大学先进土木工程材料教育部重点实验室,上海200092 [2]中南大学土木建筑学院,长沙410083

出　　处：《硅酸盐学报》2010年第9期1702-1706,共5页Journal of The Chinese Ceramic Society

基　　金：铁道部科技研究开发计划重大课题(2008G031-18);先进土木工程材料教育部重点实验室青年基金重点项目

摘　　要：复合胶凝材料水化性能在蒸汽养护及标准养护下有很大差异。通过水化程度、水化产物分析,研究了养护条件及胶凝材料组成对大掺量粉煤灰和磨细矿渣粉矿物掺合料复合胶凝材料体系水化性能的影响。采用化学结合水法、氢氧化钙法及X射线衍射法对复合胶凝材料的水化程度和水化产物进行了表征。结果表明:蒸汽养护条件加速了复合胶凝材料的早期水化,在蒸养阶段更为明显;化学结合水法和氢氧化钙法均能表征胶凝材料的水化程度,当采用氢氧化钙法时,应考虑掺合料火山灰反应影响;蒸汽养护条件下,复合胶凝材料的水化产物种类不变,但水化产物含量增多。The hydration properties of compound cementitious materials（CCM） under steam curing condition quite differ from those under standard curing condition.The effects of steam curing condition and composition of cementing materials on hydration degree and hydration products of CCM with high volume of fly ash and ground granulated blast furnace slag were investigated.The non-evaporable water and calcium hydroxide（CH） content method were used to determine the hydration degree of these cementitious materials,and X-ray diffraction analysis was used to determine the hydration products of CCM.The results show that the steam curing accelerates the CCM hydration,especially at steam curing period.The CH content,as well as the non-evaporable water content can be used to evaluate the dydration degree of cement paste.However,it is necessary to consider the CH consumption due to pozzolanic reaction of mineral admixtures when using CH content to determine the hydration degree of CCM.The steam curing condition has no effect on the variety of the hydration products but on their amount and improves pozzolanic activity of mineral admixtures.

关 键 词：蒸汽养护 复合胶凝材料 化学结合水 水化 

分 类 号：TQ172[化学工程—水泥工业]