Design 1 (28 days) (5,100 psi)
The mix design: Three 94 lb. bags of type 1 Portland cement, 12 cu. ft. of washed screenings and 21 gallons of water.
Design 2 (28 days) (4,000 psi)
The mix design: Four 94 lb. bags of type 1 Portland cement, 18 cu. ft. of washed screenings and 28 gallons of water.
Design 3 (28 days) (2,950 psi)
The mix design: Four 94 lb. bags of type 1 Portland cement, one 75 lb. bag of mortar mix type S, 6 cu. ft. of washed screenings and 13 gallons of water.
Design 4 (28 days) (6,610 psi)
The mix design: Two 94 lb. bags of type 1 Portland cement, 6 cu. ft. of washed screenings and 14 gallons of water.
How Much is needed?
For 8" block with 1 cubic yard: 60-70 blocks
For 12" block with 1 cubic yard: 50-60 blocks
*The above grout design test results are supported by independent lab tests run by:
Professional Service Industries, Inc
