The demand for green construction materials and eco-products is burgeoning globally due to the shortage of natural materials and the relevant environmental consequences of natural materials. In addition, the management of rapidly increasing construction and demolition (C&D) waste and waste glass is in serious concern due to the shortage of landfills and associated environmental burdens for landfill disposal. Concrete paving eco-blocks using recycled materials derived from locally generated C&D waste and waste glass have been developed in Hong Kong and achieved its current advanced form with the continuous improvement. Therefore, this study aims to assess and compare the environmental impacts and sustainability associated with the natural blocks manufactured with virgin materials and three generations of the eco-blocks manufactured with recycled C&D waste and waste glass by the lifecycle assessment (LCA) techniques.
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