蒸汽养护制度对水泥石孔结构的影响  

Effect of Steam Curing System on Pore Structure of Cement Paste

作　　者：耿健[1] 彭波 孙家瑛[1] 

机构地区：[1]浙江大学宁波理工学院绿色建材与废弃物资源化研究中心,浙江宁波315100 [2]武汉市墙改办,湖北武汉430030

出　　处：《建筑材料学报》2011年第1期116-118,123,共4页Journal of Building Materials

基　　金：国家高科技研究发展计划(863计划)资助项目(2005AA332010)

摘　　要：采用压汞法研究了蒸汽养护(蒸养)制度对水泥石孔结构的影响.结果表明:蒸养过程会导致水泥石孔结构变差,这是造成蒸养混凝土抗渗性能下降的主要原因;蒸养制度中各参数的变化对水泥石孔结构有明显的影响,静养时间的延长对水泥石孔结构具有改善作用,而较快的升温速率、较长的恒温时间及过高的恒温温度均会对水泥石的孔结构产生不利影响.Mercury intrusion method was used to study the effect of steam curing system on pore structure of cement paste.The major reason for inferior permeation resistance of steam cured concrete compared with standard cured concrete is that steam curing process can cause inferior pore structure of cement paste.The influence of steam curing-related parameters on the pore structure of cement paste is significant,a longer curing period favors improvement of the pore structure of cement paste,but a higher temperature rise speed,a longer constant temperature time and a higher constant temperature are unfavorable to the pore structure of cement paste.

关 键 词：蒸汽养护 水泥石 孔结构 养护参数 压汞法 

分 类 号：TU528[建筑科学—建筑技术科学]