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A platform for research: civil engineering, architecture and urbanism
Laboratory evaluation of warm mix asphalt mixtures containing electric arc furnace (EAF) steel slag
Highlights Steel slag aggregates improved the Marshall stability of hot mix asphalt mixtures. Moisture susceptibility of warm mixtures containing steel slag was improved. Warm mix asphalt mixtures containing steel slag aggregates showed higher resilient modulus. Steel slag aggregates improved resistance to permanent deformation in warm mixtures.
Abstract This paper presents the results of a laboratory study which was aimed to verify possibility of using electric arc furnace (EAF) steel slag (SS) in substitution of natural limestone (LS) aggregates in warm mix asphalt (WMA) mixture. The SS was used as fine and coarse portion of aggregate gradation in HMA mixtures, and as coarse portion of aggregate gradation in WMA mixture. The surface texture of both LS and SS aggregates was observed through scanning electron microscope (SEM). The results illustrated that the porosity and the roughness of the SS aggregate are higher than that of the LS aggregate. Moreover, laboratory tests results indicated that use of coarse SS aggregate in WMA mixture enhances Marshall stability, resilient modulus, tensile strength, resistance to moisture damage and resistance to permanent deformation of the mixture. Hence use of coarse electric arc furnace steel slag aggregate in production of WMA mixture is recommended.
Laboratory evaluation of warm mix asphalt mixtures containing electric arc furnace (EAF) steel slag
Highlights Steel slag aggregates improved the Marshall stability of hot mix asphalt mixtures. Moisture susceptibility of warm mixtures containing steel slag was improved. Warm mix asphalt mixtures containing steel slag aggregates showed higher resilient modulus. Steel slag aggregates improved resistance to permanent deformation in warm mixtures.
Abstract This paper presents the results of a laboratory study which was aimed to verify possibility of using electric arc furnace (EAF) steel slag (SS) in substitution of natural limestone (LS) aggregates in warm mix asphalt (WMA) mixture. The SS was used as fine and coarse portion of aggregate gradation in HMA mixtures, and as coarse portion of aggregate gradation in WMA mixture. The surface texture of both LS and SS aggregates was observed through scanning electron microscope (SEM). The results illustrated that the porosity and the roughness of the SS aggregate are higher than that of the LS aggregate. Moreover, laboratory tests results indicated that use of coarse SS aggregate in WMA mixture enhances Marshall stability, resilient modulus, tensile strength, resistance to moisture damage and resistance to permanent deformation of the mixture. Hence use of coarse electric arc furnace steel slag aggregate in production of WMA mixture is recommended.
Laboratory evaluation of warm mix asphalt mixtures containing electric arc furnace (EAF) steel slag
Ameri, Mahmoud (author) / Hesami, Saeid (author) / Goli, Hadi (author)
Construction and Building Materials ; 49 ; 611-617
2013-08-26
7 pages
Article (Journal)
Electronic Resource
English
Laboratory evaluation of warm mix asphalt mixtures containing electric arc furnace (EAF) steel slag
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