Abstract
The use of recycled tire rubber in asphalt pavements to improve the overall performance, economy, and sustainability of pavements has gained considerable attention over the last few decades. Several studies have indicated that recycled tire rubber can reduce the permanent deformation of flexible pavements and enhance its resistance to rutting, reduce pavement construction and maintenance costs, and improve the resistance to fatigue damage. This paper provides a systematic and critical overview of the research on and practice of using recycled tire rubber in asphalt pavements in terms of engineering properties, performance, and durability assessment. This critical analysis of the state-of-the-art should enhance the understanding of using recycled tire rubber in asphalt pavements, define pertinent recommendations, identify knowledge gaps, and highlight the need for concerted future research.
Highlights
IntroductionSolid tire wastes are non-biodegradable materials that pose serious environmental and public
Recycled tire rubber granules are obtained by shredding scrap tires in relation to the required particle sizes, terminologies (Table 2a), and properties (Table 2b), as per the recycled waste tire particles defined by ASTM D-6270 and the standard practice for using scrap tires in civil engineering applications
The results showed that the rubber-modified asphalt was able to withstand colder temperatures than the conventional hot mix asphalt (HMA) [77]
Summary
Solid tire wastes are non-biodegradable materials that pose serious environmental and public. According almost one service lifelife every year (end-of-life tires, or ELTs), withwith overover. One billion billiontires tiresreach reachtheir theirend endofof service every year (end-of-life tires, or ELTs), being discarded without any appropriate treatments. Burning wastes environmental has a harmful impact by further increasing air, water, and soil pollution [4,5].soil. Finding storage environmental impact by further increasing air, water, and pollution [4,5]. Finding and disposal methods for this colossal amount of tire waste is utterly needed to mitigate the ecological alternative storage and disposal methods for this colossal amount of tire waste is utterly needed to damage the depletion of available sites [6,7,8,9,10,11].
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