Basalt rock waste is a major industrial waste generated as a result of quarrying rocks and artificial sand manufacture for construction projects, and its disposal can lead to several landfill hazards. However, it shows potential to be used as a source material for the manufacture of geopolymers. This paper presents the triaxial stress-strain characteristics of a novel geopolymer developed from basalt rock waste considering partial replacement with ground granulated blast furnace slag (GGBFS) up to 30%. A detailed mix design investigation revealed the optimum molarity (M) of the sodium hydroxide solution to be 8M and the optimum ratio (R) of sodium silicate to sodium hydroxide solution to be 0.75. The axial stress-strain relationships were developed after a series of triaxial laboratory tests for low confining pressures (0 to 800 kPa) and Hoek cell tests for high confining pressures (1 to 5 MPa). A constitutive model predicting the complete stress-strain behavior is proposed. The geopol
Increase in industrial and construction activities has led to an enormous rise in waste generation and its hazardous impacts on the environment. Quarrying of rocks and manufacturing of artificial sands for civil engineering projects leads to the dumping of rock waste dust, which is a source of landfill problems. Further, excessive energy requirements for cement manufacturing, higher greenhouse gas emissions and rapid depletion of natural resources have focused the research towards the development of environment friendly and sustainable materials such as geopolymers. In this paper, a novel geopolymer has been developed from industrial wastes such as basalt rock fines considering partial replacement with ground granulated blast furnace slag up to 30%. After a detailed mix-design investigation, the optimum molarity (M) of the sodium hydroxide solution was found to be 8 M whereas the optimum ratio (R) of sodium silicate to sodium hydroxide solution as 0.75. Unconfined compressive strength