Concrete Mix Design
In freeze-thaw areas, the concrete mix design shall be a minimum 3,500 psi (24.5mpa), compressive strength shall be 3,500 psi (24.5mpa) at 28 days +. Portland Cement shall meet the requirements of ASTM-C 150. Cement content shall be 564 lbs./yd. (335 kg/m3), 1 bag fiber/yd (1 fiber bag/m3). Add Color as specified. Slump 4 inch + 1 inch (80/100mm), maximum water-cement ratio shall be .44 by weight. Coarse aggregate shall be in accordance with ASTM C 33 size 3/4″ minus aggregate (14mm). Air-Entrainment 7% (+/- 1%) while using Integral Color, or 3% (+/-1%) using Color Hardeners.
In non-freeze areas the concrete mix design shall be a minimum 3,000 psi (24.5mpa), compressive strength shall be 3,000 psi (24.5mpa) at 28 days +. Portland Cement shall meet the requirements of ASTM-C 150. Cement content shall be 517 lbs./yd. (280 kg/m3), 1 bag fiber/yd. (1 bag fiber/m3). Add Color as specified. Slump 4 inch + 1 inch (80/100mm), maximum water-cement ratio shall be .44 by weight. Coarse aggregate shall be in accordance with ASTM C 33 size 3/4″ minus aggregate (14mm), Air-Entrainment 7% (+/- 1%) while using Integral Color, or 3% (+/-1%) using Color Hardeners.
Stampcrete contractors are independent companies and bear full responsibility for their workmanship. Stampcrete International, Ltd. assumes no liability for the workmanship done by any contractor using Stampcrete products.