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Open AccessReview

Recycling of Waste Materials for Asphalt Concrete and Bitumen: A Review

School of Engineering, RMIT University, Melbourne 3000, Australia
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Materials 2020, 13(7), 1495; https://doi.org/10.3390/ma13071495 (registering DOI)
Received: 21 February 2020 / Revised: 15 March 2020 / Accepted: 24 March 2020 / Published: 25 March 2020
(This article belongs to the Special Issue Concrete and Construction Materials)
Waste management has become an issue of increasing concern worldwide. These products are filling landfills and reducing the amount of livable space. Leachate produced from landfills contaminates the surrounding environment. The conventional incineration process releases toxic airborne fumes into the atmosphere. Researchers are working continuously to explore sustainable ways to manage and recycle waste materials. Recycling and reuse are the most efficient methods in waste management. The pavement industry is one promising sector, as different sorts of waste are being recycled into asphalt concrete and bitumen. This paper provides an overview of some promising waste products like high-density polyethylene, marble quarry waste, building demolition waste, ground tire rubber, cooking oil, palm oil fuel ash, coconut, sisal, cellulose and polyester fiber, starch, plastic bottles, waste glass, waste brick, waste ceramic, waste fly ash, and cigarette butts, and their use in asphalt concrete and bitumen. Many experts have investigated these waste materials and tried to find ways to use this waste for asphalt concrete and bitumen. In this paper, the outcomes from some significant research have been analyzed, and the scope for further investigation is discussed.
Keywords: asphalt concrete; recycling; waste materials; environmental sustainability; advanced materials asphalt concrete; recycling; waste materials; environmental sustainability; advanced materials
MDPI and ACS Style

Rahman, M.T.; Mohajerani, A.; Giustozzi, F. Recycling of Waste Materials for Asphalt Concrete and Bitumen: A Review. Materials 2020, 13, 1495.

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