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Updated: Oct 20, 2025

The Effect of Construction and Demolition Waste Plastic Fractions on Wood-Polymer Composite Properties
Published on: June 7, 2020
Construction and demolition waste as recycled aggregate for environmentally friendly concrete paving
Manuel Contreras Llanes1,2, Maximina Romero Pérez3, Manuel Jesús Gázquez González4
1Department of Sociology, Social Work and Public Health, Research Centre for Natural Resources, Health and Environment (RENSMA), University of Huelva, 21007, Huelva, Spain. manuel.contreras@dfa.uhu.es.
Abstract:
Recycled aggregates (RA) from construction and demolition waste (CDW) instead of natural aggregates (NA) were analysed in the manufacture of new eco-friendly concrete. Fine (FRA) and coarse (CRA) recycled aggregates were used in different percentages as substitutes of natural sand and gravel, respectively. The results revealed that the use of RA in percentages of up to 50 wt.% is feasible. Additionally, RA were used to produce paving blocks in accordance with industrial requirements. Thus, values of water absorption lesser than 6.0% and tensile strength upper than 3.6 MPa were obtained, which are similar to those of a reference sample and within the limit values established by the regulations. These results were achieved by reducing the incorporation of cement, thereby saving production costs and minimizing environmental impact.
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