期刊
CEMENT AND CONCRETE RESEARCH
卷 116, 期 -, 页码 309-330出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cemconres.2018.09.007
关键词
Magnesium silicate hydrate (M-S-H); Structure; Water content; Surface properties
资金
- Swiss National Science Foundation (SNSF) [206021_150638/1]
In this study, the structure of synthetic magnesium silicate hydrated phases (M-S-H) and the distribution of water as a function of the Mg/Si ratio were investigated. Different analytical techniques indicated that M-S-H phases arc nano-crystallite hydrated phyllosilicates with relatively short coherence length (1.2 nm) and small particle size (> 200 m(2)/g). Zeta potential and cations exchange capacity measurements showed a negative surface charge on M-S-H from the deprotonation of the silanol groups. The negative surface charge is compensated by exchangeable magnesium or others cations. Combined analyses were used to characterize the water distribution in M-S-H revealing the following: i) confined water; its amount depends mainly on the relative humidity ii) very confined water (or possibly water coordinated to magnesium), and iii) hydroxyl groups bound to magnesium and to silicon.
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