期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 226, 期 -, 页码 21-31出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2019.07.281
关键词
Alkali-activated cements; Chloride binding; Binding isotherms; Slag; Fly ash; Friedel's salt
资金
- National Science Foundation of China [51638008, 51878263]
- Australian Research Council [DE170101070, DP160104149]
- Australian Research Council [DE170101070] Funding Source: Australian Research Council
In this study, the effects of slag/fly ash ratio, Na2O concentration, silicate modulus of activators and water/binder ratio on chloride binding of alkali-activated slag/fly ash cements (AACs) are studied, using the binding isotherms. The Langmuir isotherm suits better for chloride adsorption of most of AACs, and the amount of bound chloride is predominantly influenced by the chloride concentration. The Friedel's salt only presents in alkali-activated slag samples after adsorption equilibrium. An appropriate slag/fly ash ratio could improve the chloride binding capacity due to the physical adsorption of N-A-S-H. The chloride binding of AACs decreases with the increased Na2O concentration but increases with the increased water/binder ratio, which is believed to be related to the OH- concentration in pore solutions. (C) 2019 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据