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EPD: Structural steel bolt for underwater tunnel, 12.9 kg/unit, CT-Bolt® M20 x 4000 mm - B500NC CombiCoat® (VikØrsta AS)
VikØrsta CT-Bolt® is specially developed for long life and corrosive environment such as underwater tunnels. The plastic tube that encloses the bolt provides a total seal against corrosion. The bolt takes immediate load and can be pre-tensioned before it is cast in and it has been specially developed with a view to being rapid to install in addition to being easy and safe to cast in. Our bolts are manufactured in Norway with the environment in mind where we use high quality Norwegian recycled rebar steel and our green sleeve (injection tube) are made locally of recycled ocean plastics. The steel is hot-dip galvanized and powder coated (CombiCoat®) to achieve 120 years of corrosion protection (ref.: SINTEF research report based on laboratory testing in collaboration with Vik Ørsta AS) All of our rock support bolts is produced according to NS-EN 1090, delivered CE-approved and follows the requirements of Norwegian Public Road Administration (Statens Vegvesen) handbook 761. EPD values are based on the finished assembled CT-bolt with injection tube, hemispherical dome, expansion shell, CT-plate and nut .
norway