Unlike roads at grade, bridges are flexible and subject to frequent deflection under traffic loading as well as large temperature variations. The widespread use of bridges with pre-stressed beams has resulted in varying depths of surfacing that is often considerably thinner than the adjacent road exerting higher than normal stresses within the surfacing. In addition, bridges do not drain freely so that water can be retained within surfacing layers, which increases the risk of damage from bitumen stripping and binder attrition through hydrostatic pumping and the effects of freeze thaw cycling.
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Premature failure of surfacing on bridge decks leads to unnecessary expensive repair, but these costs are dwarfed by the cost to the economy from traffic disruption and delay.
Stirling Lloyd and Aeschlimann International Ag of Switzerland, with over 60 years experience in the design manufacture and machine application of gussasphalt have combined their un-rivalled expertise in their respective fields to provide an Eliminator waterproofing and gussasphalt surfacing composite with up to three times the service life of traditional surfacing types.
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