DOI: 10.1016/j.jcou.2018.01.026
Scopus记录号: 2-s2.0-85041797267
论文题名: Water absorption of carbonated reactive MgO concrete and its correlation with the pore structure
作者: Zhang R. ; Panesar D.K.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 24 起始页码: 350
结束页码: 360
语种: 英语
英文关键词: Concrete
; Microstructure configuration
; Pore structure
; Reactive MgO
; Water absorption
Scopus关键词: Carbonation
; Concretes
; Magnesia
; Magnesium compounds
; Pore structure
; Carbonated concretes
; Chemical compositions
; Concrete durability
; Microstructural changes
; Microstructure configurations
; Scaling resistance
; Uniform pore structures
; Water absorption behavior
; Water absorption
英文摘要: Water absorption of concrete is an important indicator of concrete durability, which is closely related to the porosity and pore structure of concrete. This study investigates the water absorption behavior of carbonated concrete specimens containing reactive MgO of 10%, 30%, 50%, 70% and 90%. Meanwhile, the corresponding chemical composition and pore structure of each mix was characterized by XRD, TG/DTA, MIP and SEM. Experimental results reveal that the uniform pore structure of carbonated concrete containing 10%, 50%, 70% and 90% reactive MgO result in either high initial sorptivities or high quantities of absorbed water. The gradually microstructural change of a denser outer layer and less-dense inner layer from the surface to the center of the 50% reactive MgO concrete yields a low initial sorptivity and absorbed water quantity, which may have beneficial improvement on the freeze/thaw resistance and de-icing salt scaling resistance of concrete. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111933
Appears in Collections: 气候减缓与适应
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作者单位: Dept. of Civil Engineering, University of Toronto, 35 St. George St., Toronto, Ontario M5S 1A4, Canada
Recommended Citation:
Zhang R.,Panesar D.K.. Water absorption of carbonated reactive MgO concrete and its correlation with the pore structure[J]. Journal of CO2 Utilization,2018-01-01,24