Achieving more resource efficient practices and the benefits that they yield are high on the political agenda. Practices which utilise solid waste materials as a substitute for virgin highway construction materials have long been integral to highway construction. This research summarises past studies which have been conducted into recycling waste materials in these applications. It also investigates the environmental credentials of using glass as a virgin aggregate replacement in bitumen bound surface layers using Life Cycle Assessment (LCA). The study concludes with a number of recommendations for recycling systems which utilise glass as a stone aggregate replacement material, in order to improve environmental performance overall.

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