In 2019, RMIT researchers fired clay bricks mixed with treated sewage sludge; a 25% biosolids batch cut firing energy by 48.6% while passing strength tests

Researchers are exploring ways to recycle sewage sludge into building materials. Mixing biosolids into clay significantly cuts the energy needed for brick firing. This process helps reduce landfill waste and the environmental impact of construction. Studies show sludge can either maintain or improve brick strength depending on conditions. These innovations offer a dual solution for waste management and sustainable building.