摘要
用ＳＥＭ和ＥＤＳ研究了粉煤灰掺入水泥后与水泥浆体间所形成界面的形貌特征。结果表明，在水泥水化初期，粉煤灰表面呈三种状态：（１）被ＣＳＨ单层膜包裹；（２）被ＣＨＣＳＨ双层膜包裹；（３）嵌入块状ＣＨ晶体内。在水泥水化后期，粉煤灰颗粒表面层已完全与水泥水化产物发生反应，且形成若干层反应物，呈致密的粒状或环状凝胶体。
Using SEM and EDS, the characteristics of morphology within the interfacial zone between fly ash and cement paste added with fly ash was studied. The results show that there are three states for the surface of fly ash particles in the early period of hydration: (1) enveloped with CSH mono film, (2)enveloped with CH CSH duplex film and (3) inserted in the block of portlandite. However, in the later age of hydration, the surface of fly ash particles has been reacted fully with hydration products of cement, and formed some reaction products, e. g. densed granular or ring shaped gel.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
1997年第4期474-479,共6页
Journal of The Chinese Ceramic Society
关键词
粉煤灰
水泥
浆体
界面
形貌
fly ash, cement paste, interface, morphology
