In recent years, addition of supplementary cementitious material (SCM) as a partial replacement to cement has widely increased. Utilization of Silica fume (SF) in self-compacting concrete (SCC) have demonstrated numerous advantages in terms of rheological and mechanical properties. This thesis describes experimental procedures related to silica fume self-compacting concrete having W/C of 0.5. It also investigates the impact of 3 different percentages (5, 7.5 and 10 %) SF as a substitute for cement on plastic properties of SCC by performing slump flow, J-Ring, V-funnel and L-box tests. Regarding the mechanical performance of SCC, compressive strength, splitting tensile strength, ultrasonic pulse velocity, Schmidt hammer test, flexural strength and absorption test were conducted. Results from this study showed, increasing percentage of silica fume led to decrease in workability of SCC. Respecting the compressive strength values, rising SF percentage up to 10% caused improvement in performance of SCC, however, best performance was found to be incorporation of 7.5% silica fume in concrete. The results obtained from tensile and flexural values of SCC exhibited similar manners respecting strength enhancement. Moreover, increment of silica fume amounts decreased absorptivity and volume of permeable voids in concrete. Keywords: self-compacting concrete, silica fume, workability, slump flow, compressive strength, flexural strength, splitting tensile strength, absorption.