Experimental investigation of the physical and mechanical properties of hybrid waste tire steel and banana fiber reinforced concrete.

Abstract

Most of the civil engineering construction that has been constructed worldwide mainly use concrete as the primary construction material. But due to its weakness in tension resistance, concrete cannot be used alone. To overcome such problems, fibers may need to be considered as an additive. Workability, compressive strength, split tensile strength and flexural strength test were performed to determine the physical and mechanical properties of hybrid waste tire steel and banana fiber reinforced concrete. The average of three sample tests for each strength was used to determine the strength of hybrid concrete and tested at 7, 14, and 28 days of curing age. All cubes were made with 150 × 150 × 150 , cylinders with 100mm diameter and 200 mm height and beams with cross-section 100 × 100 and length of 500mm size. Control and three fibers reinforced concrete composites where casted using different proportions containing 1% of total volume of concrete. The hybrid mix contains 0%, 0.5%, 1% and 1.5% respectively. The study result revealed that the addition of hybrid fibers to the concrete reduces workability of wet concrete. The compressive strength shows increment by 28.11%, 16.70 and 10.90% from control at 7, 14 and 28 day respectively. The split tensile strength test result of hybrid waste tire steel and banana fiber reinforced concrete shows an increment from control by 38.47%, 35.64% and 30.63% respectively when 1% of hybrid fibers were added to the concrete. Flexural strength test result of hybrid waste tire steel and banana fiber reinforced concrete shows an enhancement by 44.61%,22.12% and 16.49% from control test result when 1%(0.75%SF + 0.25%BF) hybrid fiber were added to the concrete. It can therefore, be concluded that optimum result was obtained in each hybrid mix when 1% of hybrid waste tire steel and banana fiber was added to the concrete.