Fibre Reinforced Metakaolin Geopolymer Composite

Metakaolin geopolymer concrete is synthesized in ambient curing with flyash and metakaolin in equal proportion and sodium hydroxide and sodium silicate as alkali activator. The compressive strength of metakaolin geopolymer concrete at 28 days is 17.5 MPa. Hooked ended steel fibers were added at the increments of 0.25 % of weight of concrete up to 2%. The compressive strength increased to 29.4 MPa for 2% steel fiber and the flexural strength increased to 12 MPa for 2% of steel fiber. Hooked ended steel fibers are effective in reinforcement of metakaolin geopolymer concrete with 68% increase in compressive strength 50% increase in flexural strength 28 days