This document summarizes a study on the strength and permeability of concrete with nano-cement. Nano-cement was produced by grinding regular Portland cement in a high-energy ball mill to reduce particle size to the nano scale. Concrete mixtures with 0-50% replacement of cement with nano-cement were tested. Testing found that compressive strength increased with higher nano-cement content. Permeability decreased with nano-cement content, indicating nano-cement produces a denser, less permeable concrete. The nano-cement particles filled pores and reduced permeability compared to regular cement concrete.