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| BRIDGES
Innovation in protective coating solutions for UK bridges Jotun, one of the global market leaders in Protective Coatings for Marine and Offshore structures, has focussed its years of expertise to develop a range of cutting-edge coating solutions for UK Bridges
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xtending maintenance intervals on steel structures through coatings innovation and implementing new technology has been a key goal for Jotun Protective Coatings. This work combined with existing coating systems already holding successful track records on projects around the world, robustly protecting steel from corrosion in the harshest environments, has led Jotun to be the primary coatings solution selected for the protection of UK bridges. In conjunction with the drive for high performance, extended corrosion protection, Jotun also have a strong focus on minimising the environmental impact of its coatings. This article will specifically highlight two of the latest innovations for the protection of rail bridges. Marathon 550 Jotun work closely with all stakeholders in the rail industry for the planning, newbuild and maintenance stages of infrastructure projects. A common theme/problem arising for discussion is in those areas where rail structures are immersed and/or subjected to tidal fluctuations. Currently, these fall outside the scope of the NG/GN/CIV/002 ‘The use of protective coatings and sealants’ specifications, with ‘Consult Specialist’ advice recommended. This has historically caused frustration for project managers and frequently results in non-tested systems being selected, with little to no supporting performance test data. Jotun have many coatings systems to solve the coatings challenges in these areas, but until now, these fell outside of the wide range of coatings approved by Network Rail. Jotun, alongside Network Rail, have now approved a suitable system for the challenges of immersion in both newbuild Rail Professional
and maintenance settings. Extensive testing allows contractors to confidently use a Network Rail fully tested and approved system on all areas of a structure, including tidal and immersed areas. The toughest universal high build epoxy with surface tolerance Marathon 550 is a high build, highly abrasion resistant, surface tolerant two component epoxy coating. It is ideally suited for structures exposed to harsh environments which require an extra solid barrier to their surroundings. Marathon 550 allows for application of up to 550 microns in one coat. It can be applied on hydro-blasted and slightly damp surfaces, continuing to cure under water after application. Suitable for both maintenance and new construction, a wide range of colours are available through Jotun’s leading MCI tinting system. The rail industry can now benefit from the simplicity of a one coat anti-corrosive suitable
for all areas of metal structures. Reducing the complexity and quantity of product required on site and allowing contractors to improve application efficiency. The ability to fully cure underwater shortly after application means that structures in tidal areas can be protected from corrosion in one tidal cycle. Two pack performance in a single pack product Hardtop One represents innovation of coatings technology in the purest form. It is a one component, moisture curing, acrylic polysiloxane coating. Hardtop One has excellent colour and gloss retention and ensures a beautiful finish by brush, roller and airless spray. Historically the Rail industry has traditionally utilised two pack polyurethane topcoats to provide decorative finishes for Bridges. This traditional, widely used coating
