Research on using brick and colored glass wall waste to make decorative ventilation bricks

Abstract

DOI: https://doi.org/10.66195/mtu.2025.15.127

This study proposes a solution to recycle brick and colored glass waste to produce decorative ventilation bricks, in order to reduce environmental pollution and save natural sand resources. Experimental samples were designed with the replacement ratio of natural sand with waste mixture (50% broken bricks + 50% colored glass) of 25%, 50% and 75%, respectively. The results showed that the 25% replacement sample achieved a compressive strength of 9.18 MPa and a flexural strength of 1.92 MPa after 28 days of curing, meeting the TCVN 3121-11:2022. Replacement ratios above 50% significantly reduce mechanical properties due to high porosity and poor bonding performance. These ventilation brick products have the potential for practical application in civil works, contributing to reducing 25% of raw material costs and 30% of construction waste landfilled. The study demonstrates the feasibility of using recycled materials in the production of environmentally friendly building materials.