Abstract Poorer quality indicators than natural aggregates generally characterize recycled aggregates. This is due to the composition of primary raw material (mostly demolition waste), method processing (crushing, sorting) and typical character grains, which, in addition original grain aggregate, also contains adhered mortar. The resulting grains are heterogeneous, characterized by lower streng...

The results of an environmental study on concrete manufacture that follows the standard protocol of life cycle assessment are shown in this document. The study has been done for seven types of concrete: one conventional and six containing cement kiln dust (10%), marble sludge (10%) and demolition waste (10%, 80% and 100%) respectively, in partial or total substitution of natural aggregate. Six ...