EFFECT OF POLYPROPYLENE FIBER ON PROPERTIES OF GEOPOLYMER CONCRETE BASED METAKOLIN

Abstract

Climate changes and global warming are an international issue around the world and caused by the accumulation of greenhouse gases, and one of these reasons Portland cement industry which releases high amounts of CO2, which causes 65% of the global warming effect. So the essential component for sustainable development in the construction industry is the improvement of alternatives for cement. One of the promising materials in the field of concrete industry is the geopolymer concrete, which attracted spotlight over the past decade with its comparable performance with Portland cement. This paper presents a systematic review of different research works done in the region of geopolymer concrete based metakoalin reinforced with polypropylene fiber and under ambient temperature. The mechanical behavior was enhanced significantly through experimental results. The compressive strength was improved 14.75% with 1% of polypropylene fiber while the increment of splitting tensile strength was 12.3 %, 15.76 % respectively. The flexural strength of specimens was also improved when compared with the non-fiber geopolymer concrete. The highest increment obtained with 1.5% of fiber volume content was 27.3%. Modulus of elasticity was also improved with increment to 13.1%, when compared with the non-fiber geopolymer concrete, also from experiment adding of fibers lead to a decrease in the density of GPC. The compressive performance and flexural performance of fiber-reinforced geopolymer concrete were also better than specimens without fiber.