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Construction Products
Drawing from a background of long standing experience and technology, Bridon is an acknowledged world leader in the design, manufacture, development and supply of prestressing wire & strand to meet the needs of the construction industry. Recent years have seen the rapid development of stayed structures and in particular the stay cable bridge. Modern stay cable techniques allow installation of complete stay cables and at the same time offer the ability to replace individual stays if necessary. Fabrication and installation of stay cables using 7-wire strand have many similarities with post-tensioning. However, the demands exerted on the strand by a stay cable system are somewhat different and more onerous than is the case with traditional post-tensioning applications. In particular, the high stress variations imposed by bridge loadings on stay cables demand that the strand has a significantly improved fatigue performance in addition to the usual characteristics of prestressing stand. The strand must also have good resistance to multi-axial stresses and to stress corrosion. In order to achieve these high performance requirements, Bridon has developed a 7-wire strand specifically for stay cables with properties which are significantly enhanced over those of conventional strand. Click here to download the Bridon Construction Products Brochure