Low calcium fly ash based geopolymer concrete: Long term durability properties

Abstract

Alkaline activated low-calcium fly ash geopolymer (LCFG) was investigated for durability compared to conventional concrete. The investigation involved simulated laboratory testing mimicking the severe field environments and in-situ field observations of commercially produced culverts. Laboratory test data: pore structure, porosity, chloride diffusion, scaling, strength and electrochemical testing supported and explained the observed field data. Research investigated the impact of slag and reinforcing pre-treatment. Geopolymer binder being non-cement one using by-products, can be significantly sustainable.