Glass Reinforced Cement (GRC)

All there is to know about Glass Reinforced Cement can be found here:

http://www.google.com/search?hl=en&q=glass+reinforced+cement

I had some concrete poured using a product called fiber mesh. It is some sort of polypropylene fiber. I don't think glass fiber is used very much (please don't blast me if I'm wrong). I searched for information on glass fiber for concrete reinforcing and kept coming up with the fiber mesh. I talked to concrete people and this all they had available.

The way it is prepared is that the concrete is mixed and then premeasured bags (they dissolve) are tossed into the truck. After this the concrete is poured like normal. I took a big chance and poured with no reinforcement bar at all (slab was 12'x24'x3.5" with a beam along the perimeter). For one year now it has held together with no cracks whatsoever. The surface finish is a little rough, but I think that is due to the fact that I let it cure just a little too long before I troweled it.

This link goes to the website and there is a lot of good information there. Check with your ready-mix company they'll have this or a similar product and can give you the specs on it.

http://www.fibermesh.com/

that fibre is glass

We are in the fibreglass processing industry. We generate waste cut bits of glass yarn, woven fabrics and coated end cut bits during various stages of manufacture. Disposing off these scrap is a big challenge to us as these are Non-biodegradable and a big headache. We tried to innovate and use a small part of the coated end cut bits along with cement concrete in some small but sizable proportion as a filler. By introducing this extra component to the concrete the general mass of the concrete increased. We poured it for a cycle shed flooring and also a drums storage floor in our factory. The top layer was paved with cement and sand the normal way. The floor has not given way and we discovered a novel method to dispose off some of the waste generated, which is roughly equivalent to 3 days waste generated

In a way what we did was reinforment of concrete with glass fibres. Technically... oriented glass fibres give added strenght to composites, especially fibreglass reinforced plastics. We are sure some similar capabilities will be exhibited by glass fibre in cement too.

I'm searching for the proportion ( percentage of each part) of GRC, the glass fiber, the cement and the water, is anyone can tell me please? thank you very much..my email address is: anging1214@yahoo.com

Hi. When i used to spray GRC it was 2% glass fibre. If i remember rightly. I worked for Hollowcore. Novus. and a firm in Waskefield called Form and Function.