DOI: 10.1016/j.jcou.2017.07.002
Scopus记录号: 2-s2.0-85026529290
论文题名: Stable conversion of metastable hydrates in calcium aluminate cement by early carbonation curing
作者: Park S.M. ; Jang J.G. ; Son H.M. ; Lee H.K.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 21 起始页码: 224
结束页码: 226
语种: 英语
英文关键词: Calcium aluminate cement
; Carbonation
; CO2
; Hydration
Scopus关键词: Calcium
; Calcium carbonate
; Calcium compounds
; Carbon dioxide
; Carbonation
; Curing
; Hydrates
; Hydration
; Mercury (metal)
; Metastable phases
; Thermogravimetric analysis
; X ray diffraction analysis
; Calcium aluminate cement
; Calcium carbonate polymorphs
; CO2 concentration
; Industrial sources
; Mercury intrusion porosimetry
; Metastable hydrates
; Monocalcium aluminate
; Stable phasis
; Cements
英文摘要: The hydration of monocalcium aluminate in calcium aluminate cement forms metastable products such as CAH10 and C2AH8, which undergo phase transformations into stable products, inducing significant volumetric instability. The present study adopted carbonation curing, in which a calcium aluminate cement paste is exposed to a CO2 concentration of 10%. X-ray diffractometry, thermogravimetry and mercury intrusion porosimetry were conducted on the carbonation-cured and on reference samples at 28 days. The results showed that the metastable phases in the carbonation-cured sample were converted into stable phases and calcium carbonate polymorphs without inducing any significant change in the pore structure. This study may provide new insight into innovative means of avoiding the unstable conversion of hydrates in calcium aluminate cement by utilizing CO2 collected from industrial sources. © 2017 Elsevier Ltd. All rights reserved. 资助项目: National Research Foundation of Korea
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52653
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
Recommended Citation:
Park S.M.,Jang J.G.,Son H.M.,et al. Stable conversion of metastable hydrates in calcium aluminate cement by early carbonation curing[J]. Journal of CO2 Utilization,2017-01-01,21