Unbound slag aggregate use in construction

Wang, George

doi:10.1016/b978-0-08-100381-7.00008-2

Cited by 2 publications

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence, the greatest potential for recycling and use of steel slag is in the construction sector [6][7][8][9]. EAF slag aggregate is used in different types of concrete [9][10][11][12][13], in sub-base layer constructions [14,15], and especially in asphalt mixes [6,7,[16][17][18]. Other EAF slag applications include water and wastewater treatment [9], as well as usage in synthesis of alkali-activated materials [19].…”

Section: Introductionmentioning

confidence: 99%

Environmental Impacts of Mixed Aggregates for use in Unbound Layers in Road Construction

Gostečnik

Šinik

Mladenovič

et al. 2020

Materials and Geoenvironment

View full text Add to dashboard Cite

During carbon steel manufacturing, large amounts of electric arc furnace (EAF) slag are generated. EAF slag, if properly treated and processed into aggregate, is an alternative source of high-quality material, which can substitute the use of natural aggregates in most demanding applications in the construction sector, mostly for wearing asphalt courses. In this screening process of high-quality aggregates, a side material with grain size 0/32 mm is also produced, which can be used as an aggregate for unbound layers in road construction. In this study, the environmental impacts of slag aggregate (fraction 0/32 mm) were evaluated in mixed natural/slag aggregates. Different mixtures of natural/slag aggregates were prepared from aged (28 days) and fresh slag, and their environmental impacts were evaluated using leaching tests. It was shown that among the elements, chromium (Cr) was leached from some mixed aggregates in quantities that exceeded the criterion for inert waste. The data from the present investigation revealed that mixed aggregates, prepared from aged slag (fraction 0/32 mm) and natural stone in the ratio 10/90, are environmentally acceptable and can be safely used in unbound materials for road construction.

show abstract