Publicación: Innovative use of agro-waste sugar cane bagasse ash and waste glass as cement replacement for green concrete
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Sugarcane bagasse ash is an agro waste material used as cement replacement in the production of green concrete due to its good pozzolanic properties. The compressive strength of prepared concrete with incorporation of sugarcane bagasse is equivalent to traditional concrete. Likewise, the use of waste glass as partial replacement for cement in concrete improves the compressive strength, generating a potential use from the economic and sustainable point of view. In this study mixtures of traditional and modified concrete were designed with replacements of 20% of the cement. Different concrete mixtures with sugar cane bagasse ash and waste glass in replacement of cement were prepared. From the prepared mixtures, five cylindrical samples 0.1mx0.2m from each mix were prepared. The effect of the incorporation of waste glass on the slump, density and compressive strength had been studied. The experimental results show that the incorporation of waste glass in concrete prepared with sugar cane bagasse ash increases the slump and density due to the low water absorption and the higher density of the glass residues, respectively. Additionally, the results showed that the compressive strength is modified with the incorporation of glass powder, the largest compressive was obtained in concrete mix 15% sugar cane bagasse ash and 5% of waste glass labelled as CBA15:WG5. In fact, compressive strength increased 10% when compared with the compressive strength of the concrete mix prepared with sugar cane bagasse ash. The combined incorporation of waste glass and sugar cane bagasse ash in concrete preparation is expected to enhance the use of residual biomass in sustainable and environmentally friendly concrete preparation.