A uniformly blended mixture of portland cement and sand designed for general concrete repair. Ideal for patching and leveling concrete surfaces. Perfect as a bedding layer for flagstone or brick pavers, or as an overlay over existing concrete. Specifically designed for applications less than 2 in thick. Add Ash Grove Bonding & Fortifier Admixture to the mix to increase bonding properties for applications less than 1 in thick. Extremely strong, achieves 5000 psi. Meets ASTM C-387 specifications.