January 27, 2014
Because concrete contains gravel / stone, it should not be utilized in applications that are less than 2 inches thick. QUIKRETE Sand / Topping Mix #1103, is appropriate for applications ½ to 2 inches thick. For an application that is ½” thick, it is suggested to replace half of the mixing water with QUIKRETE Concrete Acrylic Fortifier #8610. Ensuring a sound, stable, cementitious substrate (i.e. concrete slab) that is free of any “bond breakers” such as paints, sealants, or adhesives, before applying the Sand / Topping Mix is critical in ensuring a successful application. An 80 lb bag of QUIKRETE Sand / Topping Mix yields approximately 0.66 cubic feet of material, while a 60 lb bag yields approximately 0.5 cubic feet of material. For an application of 200 square feet that is ½” thick, approximately 8 1/3 cubic feet of material would be needed. This would require approximately 13 80 lb bags, or 17 60 lb bags of Sand / Topping Mix. If this application is NOT over a concrete slab, and is utilizing sand / dirt as the substrate, a ½” application would not be recommended. A standard concrete slab application over sand / dirt is 4 inches thick. Proper preparation of the area would be required, including excavating the slab area as needed. Typically 3 inches of tamped gravel is utilized as the sub-base. A 4” slab would be an appropriate use for QUIKRETE Concrete Mix, which yields approximately 0.6 cubic feet per 80 lb bag. For an application that is 4” thick, 200 square feet would require a total of approximately 66 2/3 cubic feet, or 112 80 lb bags of Concrete Mix. All yields are approximate, and will vary based upon waste, uneven sub-grade, etc.
0out of 0found this answer helpful.