Bond Behaviour of Reinforcing Bars Embedded in Fly Ash Ggbs Based Ambient Cured Geopolymer Concrete

Abstract

In recent times, geopolymers are being employed as a greener and energy-efficient binder material. They are amorphous inorganic aluminosilicate binders, resulting from the alkali activation of alumina- and silica-rich geopolymer source materials (GSM). Concrete produced using geopolymers is a viable and greener alternative to ordinary Portland cement (OPC) concrete in terms of mechanical strength, durability and ecology-related properties. Furthermore, the production of ordinary Portland cement (OPC) binder requires a large quantity of natural resource materials and high energy, thus having an adverse impact on the environment. Because of the utilisation of industrial waste materials such as fly ash (FA) and ground-granulated blast furnace slag (GGBS) for the preparation of geopolymers, there is no possibility for their unscientific dumping. An ambient curing condition with temperature varying between 20°C and 40°C is achieved by the addition of a certain portion of GGBS along with fly ash, which is adequate for producing structural concrete that can be used in most of the construction applications. By this way, the energy required for heat curing can be avoided newline