In an Australian study, waste glass replaced up to 60% of river sand in concrete; the recycled mix gained strength and resisted chloride penetration

Engineers in Australia have found that substituting sand with waste glass in concrete mixes can be beneficial. By using up to sixty percent glass sand, the concrete's strength is enhanced, and its ability to resist chloride ions, a key factor in corrosion, is improved. Given the large amounts of waste glass produced in the U.S.