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- W623167549 abstract "Limited capital has forced many authorities to restore and improve existing facilities rather than replace them. This paper describes current techniques and materials used for concrete bridge deck overlays. Surface concrete is normally removed to the top of the upper layer of reinforcement, avoiding damage to the reinforcing steel. Modern hydromilling equipment has been found to provide a viable alternative to rotomilling or jackhammering. Low slump dense concrete, with a service life of 15 to 20 years, has a satisfactory performance. Latex modified concrete and silica fume concrete have a lower chloride in permeability and are being increasingly used as an alternative to low slump concrete. Silica fume concrete tends to be easier to batch, place and finish than latex modified concrete. Steel fibre reinforcing increases the fatigue resistance and reduces plastic and drying shrinkage of concrete. It can be used at critical areas such as expansion joints and joint nosings or in the overlay as a whole. Rapid hardening concrete is being developed for use on heavily trafficked bridges where the traffic can be carried three hours after batching." @default.
- W623167549 created "2016-06-24" @default.
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- W623167549 date "1990-01-02" @default.
- W623167549 modified "2023-09-27" @default.
- W623167549 title "BRIDGE DECK RESTORATION PRACTICES IN BRITISH COLUMBIA, CANADA" @default.
- W623167549 hasPublicationYear "1990" @default.
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