Utilization of Steel Slag Aggregate in Hot Mix Asphalt in Egypt
Gamal M. Mabrouk1, Hassan A. Mahdy2, Khaled A. Kandil3

1Gamal Mahmoud Nabil Mohamed Mabrouk, Public Works Department, Ain Shams University/ Faculty of Engineering, Cairo, Egypt.
2Hassan Abd El Zaher Hassan Mahdy*, Public Works Department, Ain Shams University /Faculty of Engineering, Cairo, Egypt.
3Khaled Anwar Ahmed Kandil, Public Works Department, Ain Shams University/ Faculty of Engineering, Cairo, Egypt.

Manuscript received on 18 February 2018 | Revised Manuscript received on 27 February 2018 | Manuscript published on 28 February 2018 | PP: 61-64 | Volume-7 Issue-3, February 2018 | Retrieval Number: C5292027318/18©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Steel slag is a byproduct from either the conversion of iron to steel in a basic oxygen furnace, or the melting of scrap to make steel in an electric arc furnace. This paper presents the influences of the utilization of steel slag as a coarse aggregate replacing the traditional limestone aggregate on the properties of a binder and surface course hot mix asphalt (HMA). Six percentages (0%, 20%, 40%, 60%, 80%, and 100%) of limestone aggregate were replaced by steel slag aggregate (SSA) for both binder and surface course. The effectiveness of SSA in HMA was measured by preparing Marshall Specimens and measure their stability, flow, stiffness, indirect tensile stress, and loss of stability. It was observed that replacing up to 60% of limestone coarse aggregate by SSA improved the mechanical properties of the mixtures and it was the optimal percentage.
Keywords: Steel Slag Aggregate, Asphalt Mixtures, Marshall, Indirect Tensile Strength.

Scope of the Article: Environmental Engineering