Influence of Ground Granulated Blast Furnace Slag on the compressive strength and ductility of Ultra High-performance fibre reinforced cementitious composites

The mechanical properties of Ultra High Performance Fibre Reinforced Cementitious Composite (UHPFRCC) is basically influenced by the type fibres and reactive binders used. Fibres primarily influence ductility whereas compressive strength UHPFRCC. Among commonly used binders, Ground Granulated Blast Furnace Slag (SL) with its vitreous nature has ability influencing both This study discussed microstructure six different mixtures made up 0%, 20%, 40%, 60% 75% 90% cement replacement SL. XRD results indicated that, increased levels C-S-H ettringite retard hydration process leading to lower vice versa. SL-cementitious composite can achieve a 108.1MPa 1.67% without use fibres. maximum were achieved 40% SL minimum 20% contents, respectively. Moreover, optimum (i.e. strength, tensile flexural strain) in cementitious composite.