Gfrc concrete tools

GFRC is very sensitve to the mix consistency — viscosity, flowability, workability. The basic GFRC mix design has been proportioned to make it very easy to crete a flowable mix design and still use a low water-cement ratio for strong concrete.

In ordinary concrete mix design, which is aggregate rich, the traditional way to create a flowable mix is to use quite a bit of a very powerful superplasticizer. The mix is intended to be poured into a mold that fills by gravity. In contrast, GFRC is sprayed onto the surface of a mold that may be vertical or even upside down. The mix has to be flowable so it can be sprayed and achieve a very high quality surface finish with no pinholes, but it also has to stick to the mold.

In addition, because GFRC uses a cement-rich mix, the mix is sensitive to good cement particle dispersion for high early strength and quick set times. What high shear mixing does is it mechanically disperses the clumped cement particles rather than relying on large aggregate and large amounts of superplasticizer to do the same thing. With conventional concrete, the large aggregate gravel creates shearing action as it tumbles in the mixer. GFRC needs mechanical mixing at high energy to achieve that cement dispersion.

Using a paddle style mixer such as the hand-held Collomix Xo6 or Xo55 , simply mix at slow speed first to combine all the ingredients. Watch and learn, or contact us for additional information. Sprayup vs. Premix vs. Just added to your wishlist:. My Wishlist Continue. You've just added this product to the cart:. Go to cart page Continue. Standard HP50 is perhaps the most versatile and easy to use bag mix available today. With just one bag you can make a multitude of various mix types. Contains all of your GFRC components.

No errors in weighing out individual components, with consistent results in every bag. AR Glass Net Scrim. AR Glass Net Scrim cut to length or by the roll. Premium Silica Sand, mesh, 50lb. GFRC Hopper gun stand. The perfect amount of supplies to replenish or start learning GFRC. Conveniently bundled to save time and money. Want to get started with GFRC?

Here is the perfect assortment of tools and materials to get going. Conveniently bundled to save you time and money. Metakaolin, 40lb bag. CSA, 50lb bag.