Study on the setting characteristics and microstructural properties of alkali activated fly ash and ggbs blended geopolymer pastes

Abstract

There is a huge demand for environmentally sustainable materials newlinein the construction industry to reduce the carbon footprint worldwide. Day by newlineday, utilization of cement is found increasing in the industry. An increase in newlinecement consumption in construction activities leads to the emission of an newlineenormous amount of CO2 and the depletion of a large number of earthen newlineresources, which is a major raw material for cement manufacturing. The newlinegeopolymer concrete is such a vibrant and promising one in producing ecofriendly newlineconcrete by replacing the cement concrete. newlineAlthough geopolymer concrete is a compelling alternative to newlinecement concrete as sustainable material, the present application on buildings newlineand other structural components is limited due to the non-existence of codal newlineprovisions with regard to mix design procedure for geopolymer concrete and newlinethis is mainly due to lack of available information about the fresh and newlinehardened properties of geopolymer concrete. In the present study, an attempt newlinehas been made to find out the fresh and hardened properties of geopolymer newlinepaste and concrete and to find out whether it can be used in structural newlinemembers by replacing the conventional cement concrete. newline