POTENTIAL USE OF AGROENERGETIC WASTE IN CONCRETE PRODUCTION

Abstract

In this work, it was proposed the evaluation of reuse of agroenergy wastes in concrete production, being studied the mineral additions and coarse aggregate substitutions. The methodology consisted in collect and analyze data to verify the technical feasibility of use of waste. The materials selected were palm oil fuel ash, rice husk ash and sugarcane bagasse ash for partial replacement of Portland cement, and coconut and palm bark for partial replacement of the aggregate. The first part of the work consisted in the evaluation of physical and chemical characteristics of the materials, and then the results of the compressive strength tests in concrete traces were analyzed in order to verify the influence of the residues on concrete. The studies showed that the substitution of 10% of Portland cement by the palm oil fuel ash and rice husk ash presented better values of compressive strength.