Evaluation of Physico-mechanical Properties of LDPE-Based Bubble Wrap and Coconut Coir as Concrete Pavement Tile Reinforcement
摘要
The surge in concrete usage worldwide challenges environmental sustainability, prompting a search for alternatives. This research delves into the feasibility of incorporating LDPE-based bubble wrap waste and coconut coir into concrete pavement tiles to mitigate environmental concerns and enhance material durability. This study utilized LDPE-based bubble wrap and coconut coir as reinforcement for concrete tiles with a cement-sand-water ratio of 1:1:0.5. Partial substitution of sand was done at a 2% rate using LDPE and coir in various ratios (1.5:0.5, 1:1, and 0.5:1.5). Two fiber lengths, 30 mm and 50 mm, were utilized to assess their impact on tile properties. Tiles labeled A, B, and C contained 30 mm coir fiber, while tiles D, E, and F contained 50 mm coir fiber, maintaining the same LDPE-coir composition. Evaluation encompassed physico-mechanical attributes such as water absorption, density, slump, compression, and flexural strength. Tiles with 50 mm coir fibers exhibited slightly higher water absorption across all LDPE-coir ratios, with density decreasing as fiber length increased, resulting in the lowest density for tiles with 50 mm coir fiber. Slump tests indicated no significant deviation between 30 mm and 50 mm coir fiber tiles, except for shear slump observed in tiles with 30 mm coir, 0.5 LDPE, and 1.5 coir ratio. Moreover, tiles with 50 mm coir fiber and a 1.5% LDPE with a 0.5% coir ratio displayed the highest compressive and flexural strength among the tested samples.