Estudo da influência da adição de fibra e cinza de bagaço de cana sobre a resistência à tração de concretos

Abstract

This work presents a study about the simultaneous incorporation of by-products generated by the sugarcane industry, sugarcane bagasse fiber (SBC) and sugarcane bagasse ash (CBC), in concrete. The preliminary procedures, the physical-chemical characterization of these residues, the presentation of the dosage and the methodology of running and molding the cylindrical specimens (100 x 200 mm), the curing procedure used and the results of the slump tests will be presented. cone trunk and tension by diametral compression. Subsequently, through the analysis of the results obtained between the reference concrete and the special concretes, the concrete that presents the best tensile strength by diametrical compression was determined, in this case, the concrete with simultaneous additions and, through the characteristics of the workability property of this mixture was provided the preferred use for this concrete. It should be noted that the concrete produced had percentages of additions of 1% FBC, 3.5% CBC and 1% FBC + 3.5% CBC. It is worth mentioning that they had the same dosage, with respect to w/c in constant amounts and did not use the addition of additives. The workability was evaluated through the consistency aspects through the cone slump test and visual cohesion and homogeneity. The tensile strength by diametral compression was analyzed at 7 and 28 days of age of the concrete.