Item - Concrete Mix Concrete Mix Starts to Harden 30 min Color Gray Container Size 50 lb Container Style Pail Coverage 0.38 cu ft Full Cure Time 28 day Yield Strength 4000 psi Application Temp Range 45 Degrees to 90 Degrees F Meets ASTM C-387 and ASTM C-270 Characteristics Powder Application Building Curbs Building Downspout Troughs Building Floors Building Patios Building Sidewalks Building Steps Setting Posts Min Thickness 2 in
