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Article

Characteristics of Warm Mix Asphalt Incorporating Coarse Steel Slag Aggregates

1
Department of Civil Engineering and Built Environment, University Tun Hussein Onn Malaysia, Parit Raja 86400, Malaysia
2
Department of Civil Engineering, University Tenaga Nasional, Kajang 43000, Malaysia
3
Department of Civil Engineering, University Malaya, Kuala Lumpur 50603, Malaysia
*
Authors to whom correspondence should be addressed.
Academic Editor: Amir Tabakovic
Appl. Sci. 2021, 11(8), 3708; https://doi.org/10.3390/app11083708
Received: 3 March 2021 / Revised: 30 March 2021 / Accepted: 31 March 2021 / Published: 20 April 2021
(This article belongs to the Special Issue Advances in Asphalt Pavement Technologies and Practices)
The major goal of sustainable practices is to preserve raw resources through the utilization of waste materials as an alternative to natural resources. Decreasing the temperature required to produce asphalt mixes contributes to environmental sustainability by reducing energy consumption and toxic emissions. In this study, warm mix asphalt incorporating coarse steel slag aggregates was investigated. Warm mix asphalt was produced at different temperatures lower than the control asphalt mixes (hot mix asphalt) by 10, 20, and 30 °C. The performances of the control and warm mix asphalt were assessed through laboratory tests examining stiffness modulus, dynamic creep, and moisture sensitivity. Furthermore, a response surface methodology (RSM) was conducted by means of DESIGN EXPERT 11 to develop prediction models for the performance of warm mix asphalt. The findings of this study illustrate that producing warm mix asphalt at a temperature 10 °C lower than that of hot mix asphalt exhibited the best results, compared to the other mixes. Additionally, the warm mix asphalt produced at 30 °C lower than the hot mix asphalt exhibited comparable performance to the hot mix asphalt. However, as the production temperature increases, the performance of the warm mix asphalt improves. View Full-Text
Keywords: steel slag aggregate; warm mix asphalt; RSM; stiffness modulus; dynamic creep; moisture sensitivity steel slag aggregate; warm mix asphalt; RSM; stiffness modulus; dynamic creep; moisture sensitivity
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MDPI and ACS Style

Alnadish, A.M.; Aman, M.Y.; Katman, H.Y.B.; Ibrahim, M.R. Characteristics of Warm Mix Asphalt Incorporating Coarse Steel Slag Aggregates. Appl. Sci. 2021, 11, 3708. https://doi.org/10.3390/app11083708

AMA Style

Alnadish AM, Aman MY, Katman HYB, Ibrahim MR. Characteristics of Warm Mix Asphalt Incorporating Coarse Steel Slag Aggregates. Applied Sciences. 2021; 11(8):3708. https://doi.org/10.3390/app11083708

Chicago/Turabian Style

Alnadish, Adham M., Mohamad Y. Aman, Herda Y.B. Katman, and Mohd R. Ibrahim 2021. "Characteristics of Warm Mix Asphalt Incorporating Coarse Steel Slag Aggregates" Applied Sciences 11, no. 8: 3708. https://doi.org/10.3390/app11083708

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