Sustainable Concrete Mix Design with Zeolite as Partial Cement Replacement

Abstract

Reduced cement use in concrete construction is a practical way to reduce carbon emissions and combat global warming. one tactic is to use a cementitious or non-cementitious filler in place of some of the cement. optimizing the combination proportions to reduce the cement content is a different tactic. There isn't much research on the adoption of these tactics together, despite the fact that they have been used separately. Because of growing concerns about global warming, two of the most important sustainable development issues in recent decades have been reducing the use of normal Portland cement and improving the mechanical properties of concrete composites. One natural pozzolanic material that has been used to increase the durability of concrete is zeolite. A series of cubes, cylinders and beam samples with varied amounts of zeolite added, binder/aggregate (B/A) ratios and water/binder (W/B) ratios were prepared for strength testing to investigate the viability of integrating these two techniques. Based on the other mixture proportions, the results indicated that replacing cement with 2.5% zeolite, 15% volcanic tuff, and 10% rubber would increase packing density and flowability while decreasing the cement/strength ratio by 10.4%-15.32%. At lower strengths levels, the optimal B/A ratio for the smallest cement-to-strength ratio is frequently smaller.