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Concrete Countertop Mix Ratio. GFRC concrete countertops use a special mix design and high glass fiber loads that create high flexural strength. Make high strength concrete for countertops furniture etc.
Quikrete 80 Lbs Countertop Mix Mix Concrete Concrete Diy High Strength Concrete from www.pinterest.com
Depending on whether you are spraying it or making a self-consolidating mix the formula will differ a bit. Fine aggregate concrete sand and Portland cement are used for the topcoat. For example if one cubic yard of the mix has 235 pounds of water and 470 pounds of cement the water-to-cement ratio is50.
You will also want to get extra straight Portland Type III cement from your hardware store.
One admixture pack combined with either an 80 lb. GFRC 60-60-18 Mix This formula for glass fiber reinforced concrete GFRC makes about 1 cu. One admixture pack combined with either an 80 lb. This mixture should be doughy able to hold its shape as well.
