Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Chinese Electron Microscopy Society》 2014-04
Add to Favorite Get Latest Update

Early hydration properties of steel slag under high alkalinity

HAN Fang-hui;ZHANG Zeng-qi;YAN Pei-yu;School of Chemical and Environmental Engineering,China University of Mining and Technology ( Beijing);Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry,Department of Civil Engineering,Tsinghua University;  
NaOH solutions with concentration of 1. 2 mol /L and 1. 6 mol /L were used as activators in the hydration of steel slag. The hydration products,microstructure and non-evaporable water content of steel slag hydrating for 1 d and 7 d were investigated. The hydration properties of steel slag under the alkaline condition were compared with those under the temperature of 60 ℃. The results show that both the conditions of high alkalinity and elevated temperature can promote the early hydration of steel slag's active components( e. g. C2 S,C3S and C12A7),but the hydration degree of low-active components( e. g. RO phase and Fe3O4) was very low. High alkalinity and elevated temperature had little influence on the kinds of hydration products of steel slag. The non-evaporable water content of steel slag increases with an increase in alkalinity. The promoting effect of high alkalinity on the early hydration of steel slag was stronger than that of elevated temperature.
【Fund】: 国家自然科学基金资助项目(No.51108245);; 硅酸盐建筑材料国家重点实验室开放课题基金资助项目(No.SYSJJ2012-10)
【CateGory Index】: TU521.4
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved