- Arcylic Polymer is a MUST for any GFRC mix. Without it, GFRC work must cure for 7 days in a climate controlled environment with over 95% humidity!
- Adding Polymer to GFRC and Concrete mixes makes cure time 24 hours, not 7 days.
- Add to concrete mixes to reduce shrinkage and increase bonding and strength.
- Polymer works by 'holding' the water in the cement, not allowing it to surface during curing. This speeds the cure time up drastically, so molds can be taken apart and precast concrete/GFRC taken out of molds after just 24 hours.
- Provided added workability with the GFRC mix, and increases adherence to vertical mold surfaces.
- Suitable for use with both white and gray Portland cements.
- Contains a defoamer which prevents the polymer from foaming during mixing, which would trap excess air in the GFRC mix.
- Does not yellow when weathered, so will not discolor GFRC finishes, as some acrylic polymers can do.
- PLEASE NOTE: If you are doing GFRC with this, and used to working with other polymer curing aids (Forton, Flexybo, Etc.) then you may need to use a little more water in your mix when using Polyplex. Here are the technical details:
Polyplex is 47% solid and does not have any type of water reducer in the formulation. Here is the calculation to use when calculating the w/c ratio, to proper amount of Polyplex in a batch:
Based on 5% solids/batch, based on one sack (94#) cement and .33 w/c
If 94 / 0.47 = 10 # total Polyplex (# = lbs)
and then 10 X .53 = 5.3 # water (in the Polyplex 10#)
Therefore, 94 x 0.33 = 31 # water needed for .33 w/c.
And, 10 pounds of polyplex contains 5.3 pound of water.
So you need: (31 # water) minus (5.3 #) = 25.7 # added water
Actual water may need to be adjusted based on type/quality of cement as well as the sand. A # 30 mesh silica is recommended for typical premix GFRC design.
- Type of Polymer: Acrylic Based.
- 1 Gallon Polymer weighs approx. 9 lbs. (usually added to concrete mixes based on weight, not volume)
- Available in 1 Gallon, 5 Gallon, and 55 gallon drums.
- 55 Gallon Drums (470 lbs. each) ship via Freight. We will contact you with freight cost- please order drums separately from other items on our website.
- View Polymer TDS.
- View Polymer SDS.
- Please see our Concrete Recipe section for some typical Concrete and GFRC recipes.
- Recommended polymer content is 5% polymer solids to the weight of dry cement. This Polymer is 50% solids, so 94 lbs. of cement would need 10 lbs of Polymer. This formula of 5% is for both GFRC, or for concrete mixes.
- Polymer can also be added into Cement Slurry paste mixes. Create mix water by combining 5 parts water with 1 part polymer, and use this water mix instead of just straight water when mixing the slurry. (Slurry is usually used to fill voids and pinholes in the concrete surface, prior to sealing the concrete).
- NOTE: When adding Polymer to concrete or GFRC mixes, the temperature of the mix should remain around 60°F -65°F . Adding ice to the water in the mix will help keep the mixture cool. Use of a thermometer will help control the temperature.