Impact of Replacing Coarse Aggregate with Recycled Glass on The Flexural Properties of Green Concrete

Abstract

The construction sector's continuous progress has led to a permanent transition from natural aggregate use toward recycled glass materials. The construction sector requires this transformation because it strives to discover better and more sustainable building material techniques. This research explores how glass aggregates affect concrete rheological properties and strength measurements and flexural characteristics. Tests on workability and compressive strength and flexural strength were carried out following previously established criteria. Concrete mixtures with glass aggregates achieved their best performance at a 2.5% glass aggregate volume ratio as they reached 16MPa compressive strength compared to 17.1MPa for the control mix. The compressive strength dropped substantially from this threshold point while the control mix consistently demonstrated superior performance compared to each modified mixture. The addition of glass aggregates results in changes to concrete workability. Additions of glass aggregate at 2.5% or 5% improved mixture workability though higher percentages decreased workability showing the requirement for water content adjustment and mixture structure amendments. Matches with 2.5% of glass aggregates for concrete exhibit superior effects based on the experimental analysis yet fail to perform well beyond this specific percentage threshold.