EVALUATION OF THE USE OF BIOMASS-BASED THERMAL POWER PLANT’S FLY ASH (BFA) AS MINERAL ADDITION IN CONCRETE

Abstract

The proposal of the present work evaluates the reuse of Biomass Fly Ash (BFA) from thermoelectric plants, in concrete production, as partial substitute for Portland cement. The materials selected were biomass fly ash formed by wood chips, palm oil fuel, rice husk and sugarcane bagasse. The methodology consisted in a literary review to collect and analyze data to verify the technical feasibility of the use of waste. The first part of the work consisted in the evaluation of physical and chemical characteristics of the BFA and then the results of compressive strength tests in concrete traces were analyzed in order to verify the influence of the ashes in concrete. The studies showed that the replacement of 10% and 20% of Portland cement by the ashes of rice husk and sugarcane bagasse, respectively, presented better values ​​in the increase of compressive strength in relation to the reference concrete.