Authors
Carlos Rodríguez; Isidro Sánchez*; Isabel Miñano; Francisco Benito; Marta Cabeza; Carlos Parra.
Abstract
Laboratory concretes (≈20 MPa target) were produced replacing 15–30% of natural aggregates with different recycled construction-and-demolition aggregates (RMA, ceramic, concrete) and with slag (coarse/fine) from Gas Incinerator Combined Cycle (GICC) plants. Mechanical properties, capillary absorption, density, carbonation, chloride ingress, and sulfate resistance were assessed. Using C&DW aggregates generally reduced performance versus the natural-aggregate control. In contrast, GICC by-products improved behaviour: the fine slag and fly ash used as cement additions enhanced long-term properties, and the coarse GICC slag used as recycled aggregate generally improved most properties. The study supports the feasibility of these wastes in non-structural concrete to promote circularity.
Type of publication
Journal paper. MDPI
Publisher
Sustainability (MDPI), 11(3):633; Published 25 January 2019.
DOI
10.3390/su11030633.
