DOI: 10.1016/j.jcou.2017.01.009
Scopus记录号: 2-s2.0-85011340685
论文题名: Production of carbonate aggregates using steel slag and carbon dioxide for carbon-negative concrete
作者: Ghouleh Z. ; Guthrie R.I.L. ; Shao Y.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2017
卷: 18 起始页码: 125
结束页码: 138
语种: 英语
Scopus关键词: Aggregates
; Carbon dioxide
; Carbon footprint
; Carbonation
; Compressive strength
; Concrete products
; Concretes
; Slags
; Artificial aggregates
; Carbonate aggregates
; Compressive strength of concrete
; Light weight aggregate
; Reference benchmarks
; Standardized tests
; Synthetic aggregates
; Value added applications
; Concrete aggregates
英文摘要: This work demonstrated the possibility of producing artificial carbonate aggregates from steel slag optimally activated by carbon dioxide for the purposes of waste recycling and carbon utilization in concrete. The value-added application is unique and oriented towards green concrete development. Processing of the slag involved successive carbonation treatments prior and post communition, yielding a final CO2-impregnated material suitably hardened and graded to replace natural aggregates in concrete. Standardized tests deemed the synthetic aggregate comparable in performance to commercial granite and Litex® lightweight aggregates. Compressive strength of concretes prepared using these artificial aggregates, where some specimens were further cured by carbonation, performed favorably against reference benchmark concretes. A standard full-size 20-cm concrete masonry block prepared in the manner prescribed can permanently store 2.93 kg of CO2, outweighing its embodied carbon footprint. Extending this to annual block production in the United States and Canada, around 12 million tons of CO2 could potentially be sequestered every year through such utilization. The final concrete products can be made carbon negative. © 2017 Elsevier Ltd. All rights reserved. 资助项目: Natural Sciences and Engineering Research Council of Canada
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52798
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Ghouleh Z.,Guthrie R.I.L.,Shao Y.. Production of carbonate aggregates using steel slag and carbon dioxide for carbon-negative concrete[J]. Journal of CO2 Utilization,2017-01-01,18