Experimental investigation of construction & demolition waste in bituminous concrete

Abstract

India is a developing nation, and developing nations need a lot of construction. In 2022, the construction industry used 2.05 billion tonnes of coarse materials. To meet the need for houses and roads, the 12th Five Year Plan forecasts an additional 1 billion tonnes of concrete by 2027. In road mix ratios, coarse aggregates range from 2 to 10 parts per unit of cement. The demand for coarse aggregate in 2027 will range from 2.1 to 10.3 billion tonnes. In construction, aggregate is a useful building material. Since building and demolition debris make up a significant portion of landfill garbage, it is important to establish strategies to ensure that it is used effectively. The present study has made an attempt to use recycled aggregates as coarse aggregates and concrete debris as fine aggregates as a partial replacement for natural aggregate. The experimentation includes the characterization of materials, volumetric analysis, marshal stability, flow value, indirect tensile strength, and tensile strength ratio. 20% replacement of natural aggregates with construction and demolished waste has been proposed in the concluding remarks.