SUSTAINABLE SELF-COMPACTING CONCRETE WITH PVC WASTE AS AN ALTERNATIVE TO NATURAL SAND

The placement of fresh concrete in congested rebar leads to honeycombing, thus compromising the quality of concrete. SCC resolves this issue by introducing a higher ratio of fines. Since plastic requires hundreds of years to degrade and contributes to long-term environmental pollution, its reuse in concrete provides a sustainable solution. This study investigates the use of Polyvinyl Chloride (PVC) scrap as a partial replacement of fines aggregate in the development of ecofriendly SCC. The primary objective of this research is to develop an eco-friendly mix that replaces fines while maintaining desirable workability and mechanical strength. For this purpose, various trial mixes were made and tested to achieve the desired workability without compromising strength. Fresh properties of the concrete mix were evaluated by tests, including the V-Funnel test, L-Box test, and slump flow test, to ensure that the concrete mix has the required flowability. Optimum results were achieved with 10-20% replacement of fine aggregates with PVC scrap, with 28-day strength more than 3000 psi (20.68 MPa) and passing ability greater than 80% along with acceptable value of v funnel test, showing that the mix has desired mechanical and flow properties thus 10–20% PVC replacement SCC is suitable for precast non-structural elements opens pathways for energy-efficient precast panels. Research concludes that the addition of PVC scrap is an eco-friendly alternative to develop green concrete. The reuse of PVC (a plastic material) in concrete not only reduces environmental pollution but also proves to be an innovative material in the construction industry, contributing to plastic waste management and green construction practices.