Carbonation Modification of Recycled Aggregate and Carbon Dioxide Sequestration Analysis

被引：0

作者：

Wang D. ^{[1
]}

Xiao J. ^{[1
]}

Xia B. ^{[1
]}

Yao J. ^{[2
]}

机构：

[1] College of Civil Engineering, Tongji University, Shanghai

[2] East China Architectural Design and Research Institue Co.，Ltd, Shanghai

来源：

Tongji Daxue Xuebao/Journal of Tongji University | 2022年 / 50卷 / 11期

关键词：

carbon dioxide sequestration model; carbon neutrality; carbon reduction; carbonation modification; recycled aggregate;

D O I：

10.11908/j.issn.0253-374x.21366

中图分类号：

学科分类号：

摘要：

The carbonation reaction of recycled aggregate and carbon dioxide could improve the properties of recycled aggregate and fix carbon dioxide at the same time. This paper clarifies the importance of carbon sequestration in cement-based materials for carbon neutralization and summarizes the mechanism of carbonation modification of recycled aggregates. Based on the Fick’s law，the carbon sequestration model in the three stages of original concrete service， recycled aggregate stacking，and recycled concrete service was established，and a case study was conducted. Moreover，the carbon reduction contribution model of recycled aggregate carbonation was established，and the annual carbon reduction accounting was performed for different carbonation methods of recycled aggregates，based on the estimated amount of recycled aggregate produced in China from the year 2020 to 2060. The results show that accelerated carbonation approaches could release the huge carbon reduction potential of recycled aggregates，which is an important measure to promote carbon neutrality. © 2022 Science Press. All rights reserved.

引用

页码：1610 / 1619

页数：9

共 22 条

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