ConAir® air entrainment products introduce millions of uniformly sized and spaced air voids throughout the concrete mixture. Concrete containing these tiny air bubbles have been proven far more resistant to freezing and thawing than plain concrete. Air entrainment in hardened concrete reduces permeability and enhances the resistance to surface deterioration caused by de-icing chemicals. Concrete containing air entrainment requires less water to achieve a given slump, and can aid in concrete placing and finishing as the entrained air bubbles act as tiny "ball-bearings" to greatly improve the plasticity and workability of the concrete. Concrete mixes designed using air entrainment can result in a reduction of segregation and honeycombing with smoother and more even finished surfaces. Reduced bleeding rate can be expected in air entrained mixes.