Recycling of Glass Waste on the Concrete Properties as a Partial Binding Material Substitute

Concrete is a significant construction material that is utilized extensively worldwide. A research study on the properties of concrete was conducted using Glass Waste (GW), which was readily available locally. As broken glass is difficult to sort, it is possible to positively utilize this waste particulate matter to reduce its detrimental impacts on both human health and the environment. Besides crushing or grinding, glass can transform into a natural pozzolan which enhances the fresh and hardened properties of concrete. This study also intends to reduce the amount of binding material used in the manufacturing of concrete blocks by making the best use of cement with Glass Waste. Therefore, an attempt has been made by using GW from 5-20% by weight as cement replacement for concrete blocks. When 5% crushed glass waste was added to the concrete mix (1:2:4), maximum compressive strength was 25.90 N/mm², as opposed to Ordinary Cement Concrete's 21.09 N/mm² strength, according to workability and laboratory testing. The 5% Glass Waste Mixed Cube and 5% Glass Waste Mixed Cylinder had the lowest water absorption test values at 2.22% and 3.58% respectively. In comparison to Ordinary Cement Concrete, Glass Waste Concrete has higher tensile strength. The maximum splitting tensile strength for 5% crushed Glass Waste Concrete was 2.115 N/mm², compared to 1.815 N/mm² for an Ordinary Cement Concrete Cylinder. The concrete with 20% glass waste content had the highest density, which was 2380.4 kg/m³ that defines good quality concrete.