Fly-ash and GGBS based geo-polymer concrete with granite powder as partial replacement of M-Sand for sustainability

Abstract

In the present scenario, the usage of sustainable developing materials in the construction industry is popular nowadays. The primary role in the production of ecologically friendly concrete is the creation of geopolymer concrete. Industrial by-products used as base material or replacements for cement are trending. In that manner, the utilization of industrial by-products was used as an admixture or replacement material in this geopolymer concrete production. This research attempted to make a green concrete of Geopolymer Concrete (GPC) using fly ash, Ground Granulated Blast Furnace Slag (GGBS), Manufactured Sand (M-Sand) and Granite powder (GP) used with alkaline solutions mixture of sodium hydroxide and sodium silicate with water was used. At 10, 12, 14, and 16 M molarity, the effect of granite waste powder on geopolymer fresh and mechanical qualities are studied. Embodied energy parameter performances of GPC are also shown in this study. When compared to regular concrete, the GPC series produces less carbon dioxide. In this work, 90% of fly ash and 10% of GGBS were used as a cementitious material, M- sand was used as a fine aggregate, and different proportions of 10, 15, and 20% of replacement were done by granite powder. The mechanical properties of compressive strength, Split tensile strength, and stress–strain behavior of geopolymer concrete were investigated. The test of the concrete was carried out at the age of 7 days, 14 days, and 28 days. The inference of the work is concluded that Fly ash, GGBS with GP as partial replacement to M Sand shall be used for construction application where the early gain of strength is recommended. Nevertheless, more studies have to be carried out for further conclusions in applications related to mixing at site, transportation and placement and compaction aspects of GPC mixes in the construction industries.