Optimization of Composite Eco-Blocks Derived From Sawdust Ash and Plastic as an Alternative Aggregate

Abstract

Plastic garbage circulating in bodies of water such as river streams, obstructing drainage canals, and massive piles of stinking waste are among the most indicative demonstrations of the Philippines rampant dissipation of waste in the environment. According to a 2015 report on plastic pollution by the Ocean Conservancy Charity and the McKinsey Centre for Business and Environment, the Philippines is the third-largest source of waste plastic that ends up in the ocean, after China and Indonesia. The Philippines discards around 2 million tons of plastic waste annually. Sawdust is a byproduct or waste product of the woodworking industry. Plastic is a material made up of a variety of synthetic or semi-synthetic organic compounds that are malleable and may be molded into solid things. Eco-blocks are eco-friendly bricks composed of recycled materials. The primary goal of this research is to create concrete blocks out of ground plastic wrappers and sawdust that has been burned to generate ash using alternative concrete aggregate. This research study may aid in the reduction of plastic waste and the preservation of the ecosystem. Each set included three types of concrete blocks: eco-blocks made from ground-up plastic cellophane, sawdust eco-blocks, and commercial hollow blocks. The Regional Office of the Department of Public Works and Highways examined the compression strength and wetness of eco-blocks. According to the findings, there is no discernible difference in durability between commercial hollow blocks and eco-blocks. When compared to grinded plastic cellophane eco-blocks and conventional hollow blocks, sawdust eco-blocks have a significant difference in terms of durability. The blocks have 9.69% less moisture than the limit of 45%, indicating a good grade block that fits the standards. As a result, eco-blocks manufactured from ground plastic cellophane and eco-blocks created from sawdust ash have the same potential and capability as commercial hollow blocks and are helpful concrete blocks when building structures.