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C. S. Ezemenike
O. O. Aderinlewo
I. O. Oladele
O. J. Oyedepo


Highway engineers and researchers are constantly trying to enhance the performance of asphalt concrete pavement, in order to keep up with the global adequate and sustainable highway infrastructure drive.   Modification of asphalt concrete could improve certain properties of the mixture and reduce cost of road construction materials. In this research, evaluation of Marshal Stability and flow of hybrid asphalt modified concrete was studied, the wastes from various industries such steel industry, plastic industry and coal-fired power plant industries were combined together to form hybrid composite. Steel slag, fly ash, waste plastic, aggregate and bitumen were used to produce the asphalt concrete in a hybrid manner to evaluate effect of stability and flow properties of asphalt concrete mixture. The physical properties of steel slag, fly ash aggregate, bitumen and waste plastic based polypropylene were determined by carrying out tests such as sieve analysis, moisture content, flakiness and elongation, aggregate impact, aggregate crushing, specific gravity, hygrometer, penetration, softening point, flash and fire point, viscosity, ductility and water-in-bitumen test. Bitumen with penetration grade 60/70 was used and the content varied from 5.0 to 7.0 % at 0.5% interval. A cylindrical sample with the composite mixture of asphalt concrete was produced using varying proportions of hybrid composite which comprises of steel slag (SS) and fly ash (FA) at 2%, 4%, 6% and 8% by weight of the asphalt concrete to partially replace the conventional materials (aggregate and filler) and bitumen which was partially replaced with polypropylene (PP) at 5%, 10%, 15% and 20% respectively. The Marshal Stability test conducted on the hybrid composite asphaltic concrete gives optimum stability values of 10.50 kN, 12.50 kN, 12.30 kN and 13.50 kN and optimum flow values of 3.30 mm, 2.80 mm, 2.80 mm, and 2.70 mm at 2%, 4%, 6% and 8% respectively. Comparing with Asphalt Institute specification, the non-conventional material used as fillers, coarse and fine aggregate can be conveniently used in light, medium and heavy traffic.   Based on the findings, the application of these wastes material which constitute higher stability and flow will improve the properties of asphalt concrete, reduce the cost of constituent material and decrease environmental problem that arise from various industries.

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Adil, A and Saadoon, E. (2019): The use of cement production waste to improve the properties of hot mix asphalt concrete. Journal of Civil engineering, 13(3), 394-404

Asphalt Institute. (1997): Mix Design Methods for Asphalt Concrete and Other Hot-Mix Types (MS2). The Asphalt Institute, 6th Ed

Aziz, M.M, Shokri, M., Ahsan, A. Liu, H.Y, Tay, L. and Muslim, N.H (2020): An Overview on performance of steel slag in highway industry, Journal of Advanced Research in Materials Science, 67(1), 1-10.

Brajesh, M and Ravi, S.M (2015): A study on use of industrial waste in rural road construction, international journal of innovation research in science, engineering and technology, 4(11), 10387-10398.

Debashish, K., Mahabir, P., and Jyoti, P. G. (2014): Influence of Fly-Ash as a filler In Bituminous Mixes, ARPN Journal of Engineering and Applied Sciences, 9 (6), 895-900;

FGN (1997): Government of the Federal Republic of Nigeria, General Specifications (Roads and Bridges), Volume II, 1997

FMWHM, (2013) Federal Ministry of Work Highway Manuel, General specifications (Roads and Bridges)

Jaya, R. S. (2015): Determination of Binder Film Thickness for Bituminous Mixture. 6th International Conference on Structural Engineering and Construction Management, University of Motunrawa, Kandy, Srilanka, pp. 31-37.

Muralidhara, R. Varsha .S. D and Vivek .R. D. (2020): Analysis of Flexible Pavement with Steel Slag as Coarse Aggregate, AIP Conference Proceedings 2204, 020015 (2020), Department of Civil Engineering, MVJ College of Engineering, Bangalore

Ogundipe, M.O, (2019): The use of polyethylene terephthalate waste for modifying asphalt concrete using marshal tests, Slovak Journal of Engineering and Applied Sciences. 27 (2), 9-15.

Raval, N.G, Katara, S.D, and Modiya, C.S (2014): Influence of Modifying bituminous mix with fly ash, international journal of engineering and technical research (IJETR), 2(4), 184-186.

Satish C. and Rajan C. (2010): performance characteristics of bituminous concrete with industrial wastes as a filler, Journal of material in civil engineering, 25(11), 1666-167.

Shiva P.K, Manjunath K.R, Prasa V.R (2012): study of Marshal of Stability properties of BC mix used in road construction by adding waste plastic bottle, IOSR Journal of mechanical and civil engineering (IOSRJMCE), 2(2), 12-23.

Sowmya N.J, Asad, I, Awais B, Shahid, A (2019): Utilization of copper slag in bituminous mix, Pakistan journal of engineering and technology, 2(2), 30-37.

Tomar, R. and Koshta, K. (2013): Effects of Fillers on Bituminous Paving Mixes. International Journal of Engineering Research, Science and Technology, 2(4): 2391-2397.

Wang J, Li C, Fan X and Zhang, M (2007): Flexural fatigue behavior of layered hybrid fiber reinforced concrete, Journal Wuhan University of Technology, 22(3), 560-563.