Blended Low Calcium Fly Ash Gepolymer Concrete – Environment Friendly Construction Material

Abstract

Alkali activated low fly ash-based geopolymer concrete (LCFG) is an environment friendly construction material because of its zero cement content, however its rapid strength gain mechanism is sensitive to heat curing as per past research studies. Blended LCFG concrete with small proportion of slag is more aligned to conventional Ordinary Port Land Cement (OPC) concrete for initial strength gain under ambient curing conditions and can be potential construction material. Blended LCFG concrete binder being by-products from coal fired power station and iron extraction process offer considerable saving of CO2 emission which otherwise is probable with OPC production due to its intensive energy requirements. This paper presents the findings of blended LCFG concrete and LCFG concrete and its potential replacement scenarios to OPC concrete.