Recycled aggregates from construction and demolition waste in pervious concrete

This book chapter investigates the mechanical, hydraulic, and durability properties of pervious concrete incorporating recycled aggregates (RA) sourced from construction and demolition waste. An extensive literature review, spanning the last 15 years, was carried out utilizing the Scopus database. Mechanical properties, notably compressive, flexural, and splitting tensile strengths, were evaluated with reference to the percentage replacement of natural aggregates with RA. Findings indicate that up to 30% RA replacement maintains or enhances compressive strength, yet higher replacement percentages may lead to a gradual loss in performance. The impact of RA characteristics is also discussed, including surface texture and mechanical properties, on the structural integrity of pervious concrete. The hydraulic properties, such as permeability and porosity, are explored, emphasizing the need to balance RA incorporation to enhance permeability without compromising mechanical performance. Additionally, the study examines the durability aspects of pervious concrete incorporating RA, particularly abrasion resistance, freeze-thaw resistance, and sulfate attack, while also revealing challenges associated with higher RA replacement rates.