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Glass fibre reinforcement

Sireg was displaying a wide variety of products. Specialising in geotechnical equipment for ground treatment, one of its most important products is Durglass FL, glass fibre reinforcement that has been extensively used on soft ground tunnelling projects. Supplied in rolls of up to 50m, the bars come in a range of thicknesses and can be fitted together using specially designed couplings depending on the strength required. Certain configurations also incorporate a pipe to allow pressure grouting.

Sireg's Lorena Mori says the main advantage is that the material is light enough to be carried by hand but still offers high strength and develops a good bond with the surrounding ground, making it ideal for ground treatment in advance of the tunnel face. The bars have recently been used on the Bologna-Florence high speed rail link in Italy and on the TGV Mediterranee in southern France.

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