LCA of recycled bituminous mixtures containing jet grouting waste

The study aimed to compare mechanical and environmental performance of four solutions for base layer of a flexible pavement with hot and cold technology, with and without the reemployment of jet grouting waste obtained from land consolidation work during the construction of underground tunnels. The laboratory investigation provided cold bituminous mixture with optimum performance mechanical compared to hot bituminous mixtures. The environmental evaluation has been focused on Life Cycle Assessment (LCA) taking into account all manufacturing process from cradle to laying of flexible pavement having as base layer the four mixtures investigated.