Development of durable class F fly ash based geopolymer concretes

Abstract The production of Portland Cement (PC) has been shown to be responsible for 5-8% global CO2 emissions. This led class F fly ash based geopolymer concrete being developed as a substiture PC reduce these However, research that each unique characteristics and requires specific mix design ash. is can occupy significant amount time. Furthermore, before the adopted commercial application it long-term durability established. gap one primary limitations delaying adoption concrete. While unique, they do have common which utilized optimise process. Geopolymers are also known good characteristics, in particular acid sulphate exposure. paper reports optimisation process six ashes from Australia, Sri Lanka Indonesia. strength properties performance optimised mixes reported including compressive development, chloride carbonation resistance together with when exposed acidic media Indonesian ash, simulated peat soil designed replicate conditions experienced