养护温度对陶瓷粉-水泥复合胶体水化的影响  

Effect of Curing Temperature on Hydration of Ceramic Powder-Cement Composite Colloid

作　　者：陈梦成[1,2] 张锐 赵旺平 肖建庄[3] Chen Mengcheng;Zhang Rui;Zhao Wangping;Xiao Jianzhuang(State Key Laboratory of Performance Monitoring and Protection of Rail Transit Infrastructure,East China Jiaotong University,Nanchang 330013,China;School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;College of Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]华东交通大学轨道交通基础设施性能监测与保障国家重点实验室,江西南昌330013 [2]华东交通大学土木建筑学院,江西南昌330013 [3]同济大学土木工程学院,上海200092

出　　处：《华东交通大学学报》2021年第5期48-55,126,共9页Journal of East China Jiaotong University

基　　金：国家自然科学基金(51878275)。

摘　　要：将废弃陶瓷材料加工成陶瓷粉,通过对陶瓷粉-水泥复合胶凝材料硬化浆体形貌观察,化学结合水含量和孔溶液碱度的测定,进行了早期高温养护对陶瓷粉-水泥复合胶凝材料水化特性影响的研究。研究结果表明:相同养护条件下,水泥硬化浆体的化学结合水含量和孔溶液碱度随陶瓷粉掺量的增大而减小;当陶瓷粉掺量低于20%时,早期高温养护对孔溶液碱度的提高有促进作用,且对整体水化程度的影响较大;早期高温养护提高了陶瓷粉-水泥复合胶凝材料的早期水化速率,使得早期硬化浆体的微观结构更加致密,但是对后期硬化浆体水化程度的提高有抑制作用。研究成果为陶瓷粉-水泥复合胶凝材料在早期高温养护条件下水化特性的进一步研究提供了试验基础。The ceramic waste materials were processed into ceramic powder and the hydration performance of ceramic powder-cement composite binders under different curing conditions were studied by observing the micro-morphology,measuring the chemically combined water content and the alkalinity of pore solution.It was shown that at the same curing conditions,the greater the adding rate of ceramic powder is,the more the chemically combined water content along with the alkalinity of pore solution of the hardened cement paste decreases;when the adding rate of ceramic powder is less than 20%,the earlier high temperature curing can increase the alkalinity of pore solution and has a great impact on the overall hydration degree;the earlier high temperature curing promotes the earlier hydration rate of ceramic powder-cement composite binders,which makes the micro-structure of the hardened cement paste at the prophase of hydration more compact,but it has an inhibitory effect on the improvement of the hydration degree of the later hardened paste.The results provide an experimental basis for further research on the hydration performance of ceramic powder-cement composite binders under early high temperature curing conditions.

关 键 词：高温养护 陶瓷粉 孔溶液碱度 化学结合水 微观形貌 

分 类 号：TU528[建筑科学—建筑技术科学]