【作者】 邱晨； 张亚梅；

【Author】 QIU Chen,ZHANG Yamei (Jiangsu Key Laboratory of Construction Materials,School of Materials Science and Engineering,Southeast University,Nanjing,211189,China)

【机构】 江苏省土木工程材料重点实验室东南大学材料科学与工程学院；

【摘要】 利用背散射电子像研究了不同条件下,混凝土粗骨料-浆体界面过渡区微结构的差异。分别选取了5mm、10mm、20mm和30mm四种不同的骨料尺寸,0.23、0.35及0.53三种水灰比进行了界面区厚度等性质的对比。实验结果表明,随着混凝土骨料尺寸的增大,界面过渡区厚度越大;水灰比由0.23升至0.35,界面区厚度变大。更多还原

【Abstract】 This paper presents the effect of aggregate size and water-cement ratio(W/C) on the microstructure of the interfacial transition zone(ITZ) using backscatter electronic image. Selected aggregate size was 5mm,10mm,20mm and 30mm,respectively.Water cement ratio was 0.23,0.35 and 0.53,respectively.The results suggest that increasing the size of coarse aggregate,the thickness of ITZ increased.Increasing W/C from 0.23 to 0.35,the thickness of ITZ increased as well.更多还原