The technology and production processes of glassfibre concrete have been perfected for decades and tested practically for more than 30 years. A special extrusion process incorporates layers of glassfibre into a concrete matrix; in the top layer and underlayer the fibres are undirected and scattered, in the medium layer they take the form of roofings (fibre bundles).
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http://www.rieder.cc/
[by p.makris]
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