Effect of Polypropylene Fibre on High Volume Fly Ash Self-compacting Concrete in Terms of Compressive Strength, Tensile Strength, and Concrete Abrasion

Concrete is the most widely used material in building construction because of its various advantages. Although it has many advantages, concrete in water faces problems of abrasion due to water flow. Therefore, the use of High volume fly ash (HVFA) in conjunction with polypropylene fibres is expected to be an alternative solution to the problem of concrete abrasion. This paper presents the study on the effect of high-volume fly ash concrete reinforced with polypropylene fibres in increasing the resistance of concrete to water flow abrasion. The testing program includes testing of fresh concrete (slump flow and T50 tests) and testing of hardened concrete (compressive strength of concrete, tensile strength of concrete and concrete abrasion). The Concrete abrasion test was conducted based on the standard of concrete abrasion in water. This study reveals that the use of polypropylene fibre had a positive impact in reducing the percentage of weight loss up to 24% for the abrasion test of HVFA. Furthermore, 0.6 kg/m3 of polypropylene fibre utilization can increase the tensile strength and compressive strength in comparison to High-volume fly ash concrete without fibre.