徐子芳,张明旭,朱金波

• 1:安徽理工大学材料科学与工程学院

摘要(Abstract)：

运用基本力学及导热系数测定实验系统对高温蒸养作用后的粉煤灰水泥基材料的抗压强度和热导率进行了试验研究,并借助于X射线衍射(XRD)、扫描电镜(SEM)和热重-差热分析(TG-DTA)等手段对水化产物的微观结构对其宏观性能的决定性机理进行了分析。结果表明:随蒸养温度的增加,粉煤灰水泥基材料的强度和保温性能均增强。钙矾石(AFt)转变为单硫型水化硫铝酸钙(AFm),粉煤灰释放珠状的铝、硅成分形成莫来石,水化产物失水后重新结合,晶相、晶形稳定性增强是蒸养后强度及保温性能增强的主要原因。

关键词(KeyWords)： 蒸养;粉煤灰水泥基材料;水化产物;微观结构

Abstract:

Keywords:

基金项目(Foundation): 国家自然基金项目(10872001);; 安徽理工大学博士基金项目(2010yc001)

作者(Author): 徐子芳,张明旭,朱金波

DOI: 10.13289/j.issn.1009-6264.2011.08.003

参考文献(References)：

• [1]张建云,王寅,崔霞,等.SiCp/Al复合材料导热性能的数值模拟[J].材料热处理学报,2010,31(8):146-150.ZHANG Jian-yun,WANG Yin,CUI Xia,et al.Numerical simulation of thermal conductivity of SiCp/Al composites[J].Transactions of Materials andHeat Treatment,2010,31(8):146-150.
• [2]赵庆新,孙伟,郑克仁,等.粉煤灰掺量对高性能混凝土徐变性能的影响及其机理[J].硅酸盐学报,2006,34(4):446-451.ZHAO Qing-xin,SUN Wei,ZHENG Ke-ren,et al.Influnce of fly ash proportion on creep characteristics of high-performance concrete and itsmechanism[J].Journal of the Chinese Ceramic Society,2006,34(4):446-451.
• [3]李清海,姚燕,孙蓓,等.水泥石热膨胀性能的研究[J].建筑材料学报,2007,10(6):631-635.LI Qing-hai,YAO yan,SUN Bei.et al.Investigation on behavior of thermal expansion of hydraulic cement paste[J].Journal of Building Materials,2007,10(6):631-635.
• [4]刘宝举,谢友均,张艳芹.粉煤灰细度和掺量对水泥基材料性能的影响[J].建筑材料学报,2003,6(4):426-430.LIU Bao-ju,XIE You-jun,ZHANG Yan-qin.Influence of fly ash on properties of cement-based materials[J].Journal of Building Materials,2003,6(4):426-430.
• [5]李丽娟,谢伟锋,刘峰,等.100MPa高强混凝土高温后性能研究[J].建筑材料学报,2008,11(1):100-104.LI Li-juan,XIE Wei-feng,LIU Feng,et al.Performance of 100 MPa high strength concrete(HSC)after high temperature treatment[J].Journal ofBuilding Materials,2008,11(1):100-104.
• [6]廉慧珍,童良,陈恩义.建筑材料物相研究基础[M].北京:清华大学出版社,1996.
• [7]柳献,袁勇,叶光,等.高性能混凝土高温微细观结构演化研究[J].同济大学学报:自然科学版,2008,36(11):1473-1478.LIU Xian,YUAN Yong,YE Guang,et al.Study on pore structure evolution of high performance concrete with elevated temperatures[J].Journal ofTongji University:Natural Science,2008,36(11):1473-1478.
• [8]冯竟竟,傅宇方,陈忠辉,等.高温对水泥基材料微观结构的影响[J].建筑材料学报,2009,12(3):318-322.FENG Jing-jing,FU Yu-fang,CHEN Zhong-hui,et al.Effect of high temperatures on microstructure of cement-based composite material[J].Journalof Building Materials,2009,12(3):318-322.
• [9]Menendez G,Bonavetti V L,Irassar E F.Strength development of ternary blended cement with limestone filler and blast-furnace slag[J].Cement andConcrete Composites,2003,25(1):61-67.
• [10]Richardson I G,Groves G W.The nature of C2S2H in hardened cements[J].Cement and Concrete Research,1999,29(3):1131-1147.
• [11]李清海,姚燕.热循环对水泥基材料抗压强度的影响及机理研究[J].硅酸盐学报,2006,34(10):1287-1289.LI Qing-hai,YAO Yan.Influence of thermal cycles on the compressive strength of cement-based materials[J].Journal of the Chinese Ceramic Society,2006,34(10):1287-1289.
• [12]Wei Q,Ying Z.Removal of lead,copper,nickel cobalt,and zinc from water by a cancrinite-type zeolite synthesized from fly ash[J].ChemicalEngineering Journal,2009,145(3):483-488.

文章评论(Comment)：