GFRC (Spray Up / Hand Pack) Pre-Mix Calculator

Amount Required

Project Size:

Enter the dimensions of your countertops. Include any openings for sink or stove tops.

Depth (in)
Piece No. Length (in) Width (in) No. of Pieces CF Required
1
2
3
4
5
Opening
Opening
Total CF:
Total CF + 5%:
Options:

Water: required entry. Typical amount for countertops is 30% for GFRC premix (spray up/ hand pack application) and 25% for SCC premix (simple pour application).

Water/Cement Ratio:
%

Stage II accelerator: (makes the mix set faster) typical amount is 2-5% 2% = 25% more next day strength, plenty of working time after mixing 5% = 60% more next day strength, reduces working time to 20 minutes so once it is mixed get it in the form asap. Follow directions on TDS sheet.

Stage II Accelerator:
%

Hydration Stabilizer: (makes the mix set slower for more working time) Typical amount is 0.2-0.5%. 0.2% adds 10-15 minutes to the working time at 75-90F 0.5% adds 45-60 minutes more working time at 75-90F Follow directions on TDS sheet. *NOTE* use a drill and mixing paddle to blend Hydration stabilizer into the water before adding water to your mix.

Hydration Stabilizer:
%

Fiber: (reinforcement to prevent structural cracking) Typical amount is 3% of ½” OR ¾”. HD anticrack (invisible in the mix and is used to prevent micro cracks when casting a face coat and back coat separately) Typical amount is 0.5%. Follow directions on TDS sheet *NOTE* add fiber after you have mixed the rest of the ingredients thoroughly.

Fiber:
1/2" Fiber:
%
3/4" Fiber:
%
3mm HD Anti-Crack:
%

Integral Color: Select your colors below. Typical amount is 0.5-5%. See typical color representations by clicking “select” below. *NOTE* several factors affect the actual color outcome and samples should be made prior to casting to verify actual color.

Color Additives:
Color #1
%
Color #2
%
Color #3
%
Color #4
%

Batch: To view your order in any batch size (in lbs).

Batch Size (lbs.)

Total Amount Needed

Total Required (lbs.)
Number of Batches Needed
Total Project Requirements (lbs.) Batch Weights (lbs.)
GFRC Premix:
Stage II Accelerator:
Hydration Stabilizer:
Fiber:
1/2" Fiber:
3/4" Fiber:
3mm HD Anti-Crack:
Color Additives: