The use of nanoparticles into cement concrete has garnered increased interest due to its potential to significantly improve the mechanical properties of rigid cement concrete pavements. This study examines the incorporation of carbon nanotubes (CNTs) into concrete mixtures and its impact on key performance metrics such as flexural, tensile, and compressive strength. Concrete specimens were created, cured, and assessed with different concentrations of CNT (0, 0.025, 0.050, 0.075, and 0.1%). Tensile strength consistently improved with the incorporation of CNTs; at 0.01% CNTs, it exhibited a significant increase of 26.80%. The 0.050% CNT dosage resulted in the most substantial enhancement in compressive strength, over twice that of the control mix. The 0.075% CNT dosage exhibited the most significant enhancement in flexural strength, surpassing the usual control mix by 23.11%. The findings indicate that CNTs can substantially enhance the mechanical properties of concrete, thereby being an excellent option for high-performance cement concrete rigid pavements. This study demonstrates that the incorporation of carbon nanotubes into concrete enhances its load-bearing capability, so offering an effective approach for constructing robust and sustainable infrastructure.