10% recycled glass mix boosts earth block strength by 90%: Study

Researchers at the University of Portsmouth have found that incorporating 10% recycled glass powder along with 10% lime into compressed earth blocks significantly enhances their strength, achieving a 90% increase in compressive strength compared to unstabilized blocks. These "green" blocks reached a compressive strength of 5.77 MPa and a 30% improvement in tensile strength, demonstrating superior structural integrity without cracking under intense pressure. The study involved rigorous testing of various mixes and microscopic analysis over 28 days, confirming the durability and robustness of the optimal composition. This innovation offers a sustainable alternative to traditional cement, which has a high carbon footprint, by using recycled glass as a stabilizing agent in earth blocks. The findings support the potential for large reductions in cement use and contribute to circular economy goals by repurposing industrial waste in construction. This approach could lead to greener buildings, reduced landfill waste, and a more sustainable construction industry. The article also briefly mentions related research from Japan on geopolymer-based