40 LB Sakrete Sand Mix, A Blend Of Portland Cement & Washed Sand, Designed For Repair & Building Jobs Of Less Than 2" Thickness, Can Be Used For Patching Steps, Sidewalks & Floors, Can Be Used As A Topping Over Existing Concrete, As A Grout For Drain Tile, As A Stucco & As A Bedding Mix For Laying Flagstone Or Slate, Exceeds ASTM Specification C387.