Achieving Environmental Sustainability by Reusing Low-Density Polyethylene in the Production of Bricks

Abstract

This study investigated the feasibility of reusing low-density polyethylene (LDPE) plastic waste in the production of bricks, aiming at achieving environmental sustainability. A quantitative research approach was employed in the study. The instruments used for data collection were compressive strength test and water absorption test. To ensure the consistency of the data used in this study, a reliability test was conducted using Cronbach’s Alpha with a reliability score of 0.78 obtained. To achieve the purpose of the study, data collected were analyzed using the statistical tools of R, Excel and Analysis of Variance (ANOVA) test was performed to determine statistical significance at 0.000 alpha level. The answer to the research questions showed that LDPE-based bricks exhibit superior water resistance, with zero water absorption, and a compressive strength of 1.2 N/mm², meeting the minimum standard for lightweight construction. Although their compressive strength is lower than conventional bricks, LDPE bricks demonstrate potential in non-load-bearing and eco-friendly construction applications. The results in this study support the broader narrative in the literature that advocates for the use of recycled plastics in construction, not only as a waste management solution but also as a step toward reducing the environmental footprint of the building sector.