DOI: 10.1016/j.jcou.2017.05.014
Scopus记录号: 2-s2.0-85020300802
论文题名: Potential of CO2 sequestration through construction and demolition (C&D) waste - An overview
作者: Kaliyavaradhan S.K. ; Ling T.-C.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 20 起始页码: 234
结束页码: 242
语种: 英语
英文关键词: Active carbonation
; CO2 curing
; Concrete block
; Recycled concrete aggregate
; Waste cement
Scopus关键词: Calcium
; Calcium carbonate
; Carbonation
; Cements
; Concrete aggregates
; Concrete blocks
; Concrete products
; Concretes
; Cost benefit analysis
; Curing
; Demolition
; Gas emissions
; Greenhouse gases
; Atmospheric concentration
; Carbon sequestration
; Construction and demolition
; Environmental benefits
; Exponential rates
; Mineral carbonation
; Recycled concrete aggregates
; Thermodynamically stable
; Carbon dioxide
英文摘要: Carbon dioxide (CO2) is the predominant greenhouse gas on Earth and its atmospheric concentration is increasing at an exponential rate due to human activities. Cement production contributes about 7% of the total worldwide CO2 emissions, and thus finding a practical way to reduce the greenhouse gas emission is essential. Construction and demolition (C&D) waste rich in calcium hydroxide and calcium silica hydrate is considered to be a potential calcium source for CO2 sequestration, forming thermodynamically stable carbonate minerals. In the past decade, a major research effort was to study the influencing factors affecting the effectiveness of active carbonation of C&D waste. In this paper, active carbonation techniques adopted for crushed concrete aggregate and waste cement derived from the C&D waste, and the resulting properties of the CO2 cured concrete aggregate and cement waste are discussed. In addition, special features of concrete block products as a potential medium for CO2 sequestration are also highlighted. Lastly, based on the environmental benefit and cost analysis of CO2 sequestration through C&D waste and concrete block are also presented. We concluded that the mineral carbonation of C&D waste is technically feasible, economical and environmentally friendly approach of a future carbon sequestration strategy. © 2017 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52719
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Kaliyavaradhan S.K.,Ling T.-C.. Potential of CO2 sequestration through construction and demolition (C&D) waste - An overview[J]. Journal of CO2 Utilization,2017-01-01,20