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Excessive production of agro-industrial wastes without any proper disposal solution is a constant in Brazil and should be enhanced by sugar-alcohol plants which produce large amounts of ashes from sugarcane bagasse used in the generation of electricity. Civil construction is notorious for requiring great amounts of material which are becoming rarer and derived from production processes with high production rates of greenhouse-effect gases. On the other hand, civil construction has a great capacity in absorbing different types of wastes. The use of ashes from sugarcane bagasse as a partial replacement of small aggregates and agglomerants is analyzed for the production of concrete used in paving concrete blocks. Resistance, abrasion, water absorption and MEV are assessed. Replacement rates were fixed at 25% of heavy ash by small aggregates and up to 10% of light ash by Portland cement. Material was characterized by physical assay and pozolanic activity. A 25% replacement of small aggregates by heavy ashes and 2.5% of Portland cement by light ashes complied with ABNT NBR 9781:2013 recommendations.

UTILIZAÇÃO DA CINZA LEVE E PESADA DO BAGAÇO DE CANA-DE-AÇÚCAR COMO ADITIVO MINERAL NA PRODUÇÃO DE BLOCOS DE CONCRETO PARA PAVIMENTAÇÃO