In the present work, for uniform and thorough dispersion of carbon nanotubes in concrete a very small amounts of multiwalled carbon nanotubes (MWCNT) have been taken i.e. 0.025, 0.05 and 0.075 % percentage by weight of cement. Proper dispersion of carbon nanotubes was done by the ultrasonication of the MWCNT’s in the presence of high-performance superplasticizer as a surfactant. The degree of dispersion of MWCNT in aqueous solution has been studied by the use of UV-Vis spectra. For testing the strength and durability properties, a w/b ratio of 0.39 is adopted in this study. The various tests conducted in this study are compressive strength, split tensile, flexure test, Ultrasonic pulse velocity (UPV), sorptivity and water absorption. The microstructure study has been done by the use of Scannning Electron Microscope (SEM) imaging and Energy Dispersive X-ray (EDX) analysis. From the strength test results it was observed that with the use of 0.025 % MWCNT there was a significant improvement in compressive, split tensile strength and flexural strength. From the durability tests also, it was observed that the water absorption and sorptivity also decreased with the addition of MWCNT. Evidence of debonding, and also of mesh filling were observed in the microstructure analysis. SEM shows the presence of micro-crack bridging in the composites.