Utilization of Recycle Plastic Waste in Concrete and Concrete Blocks Bricks

Abstract

Plastic waste is silent threat to the environment and their disposal is a serious issue for waste managers. Now a day society does not have any alternative to plastic products like plastic bags, plastic bottles, and plastic sheets etc. In spite of all efforts made to limit its use but unfortunately its utility is increasing day by day. To circumvent this issue many efforts were made in the past to reuse the plastic waste but no significant results were achieved. On contrary concrete being the widely used construction material is facing problem due to unavailability of construction material (Cement, sand and coarse aggregate). Various attempts were made through experimentation to check the feasibility of plastic waste to be use partially in concrete with respect to various properties of strength, workability, durability and ductility of concrete. The present study focused on suitability of using recycles plastic waste in the form of coarse aggregate in concrete and concrete blocks/bricks. In concrete, normal coarse aggregate was partially replaced with 5, 10, 15, 20, 25 and 30% of plastic aggregate and test results has shown reduction of 49% for compressive strength, 58% for flexural and 70% for tensile strength and 22% reduction in weight, when 30% plastic aggregate was used in concrete. Feasibility of replacing plastic aggregate in high percentage in concrete blocks/bricks was checked which was quite encouraging to challenge kiln bricks with 50% plastic aggregate Concrete bricks. Compressive strength of 50% plastic aggregate strength was 3450 Psi against kiln bricks of 1700 Psi. Compressive strength, water absorption, workability and certain durability tests were carried out on all samples as per ASTM standards. Index Terms— plastic aggregate, concrete blocks, Kiln Brick, properties