Maximizer Concrete is a proprietary formula that yields more coverage than standard concrete mixes. Maximizer features a specially manufactured aggregate material and higher volume of cement. 5500 psi strength. 40% stronger then regular concrete. Yields 67% more coverage. More uniform, easy-to-mix blend. Use for posts, sidewalks, steps, balconies, benches, countertops and statues. Air entrained to help prevent damage caused by winter's freeze-thaw cycles.