Comprehensive analysis of the environmental impact of electric arc furnace steel slag on asphalt mixtures

被引：54

作者：

Esther, Lizasoain-Arteaga ^{[1
]}

Pedro, Lastra-Gonzalez ^{[1
]}

Irune, Indacoechea-Vega ^{[1
]}

Gerardo, Flintsch ^{[2
]}

机构：

[1] Univ Cantabria, GITECO Res Grp, Ave Los Castros 44, Santander 39005, Spain

[2] Virginia Polytech Inst & State Univ, Ctr Sustainable Transportat Infrastruct, Blacksburg, VA 24061 USA

来源：

JOURNAL OF CLEANER PRODUCTION | 2020年 / 275卷

关键词：

Life cycle assessment; LCA; Environmental impact; Slag; Electric arc furnace; Asphalt mixture; ROAD; SENSITIVITY;

D O I：

10.1016/j.jclepro.2020.123121

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This paper analyses the environmental impact of replacing high-quality coarse aggregates by electric arc furnace (EAF) steel slag. A Life Cycle Assessment (LCA) was performed on three asphalt mixtures containing different aggregates: namely ophite, slag 1 and slag 2. The inventory gaps were filled by performing several laboratory tests and applying theoretical models. Furthermore, the sensitivity of the results when applying several allocation procedures, aggregate moisture content and ophite transport distances was also analysed. The results showed the great importance of both the aggregate absorption rate and, above all, the humidity. Slags can replace ophite located more than 144 km from the asphalt plant. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：12

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