Triaxial Stress-Strain Behavior of a Novel Basalt Rock Waste and Ground Granulated Blast Furnace Slag Geopolymer

Basalt rock waste is a major industrial generated as result of quarrying rocks and artificial sand manufacture for construction projects, its disposal can lead to several landfill hazards. However, it shows potential be used source material the geopolymers. This paper presents triaxial stress-strain characteristics novel geopolymer developed from basalt considering partial replacement with ground granulated blast furnace slag (GGBFS) up 30%. A detailed mix design investigation revealed optimum molarity (M) sodium hydroxide solution 8M ratio (R) silicate 0.75. The axial relationships were after series laboratory tests low confining pressures (0 800 kPa) Hoek cell high (1 5 MPa). constitutive model predicting complete behavior proposed. some degree similarity Portland cement binder; however, differences such an increase in stiffness reduction ductility observed. Scanning electron microscopy (SEM) images also suggested dense gel formation resulting homogeneous compact microstructure. study demonstrates that innovative proposed herein produced wastes has suitable use alternative sustainable material.