Investigation on corrosion behaviour of geopolymer concrete using DMS and M−Sand as a fine aggregate under ambient curing conditions

Abstract

Finding an alternative to cement concrete has become critical for the long-term sustainability of the environment. Because of its lower carbon footprint, geopolymer concrete has shown to be an excellent substitute for traditional concrete. Fly ash, GGBS, metakaolin, red mud, and other raw materials for geopolymer concrete are high in silica and alumina. Geopolymer matrix is created when these raw materials are mixed with alkaline solutions. Fine and coarse aggregates, as well as superplasticizers, are all essential ingredients in geopolymer concrete. The goal of this study is to see if fly ash, GGBS, Manufactured Sand (M−Sand), and Dredged Marine Sand (DMS) can be used to make geopolymer concrete. In terms of corrosion resistance, carbonation and alkalinity, DMS could easily replace the typical scarce material (River Sand) in the manufacturing of geopolymer concrete under ambient curing conditions.