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Earthquake lessons

Tony Gee & Partners (01932) 868277

Advanced repair techniques developed in the aftermath of recent major earthquakes are being used to repair the River Gardens bridge in the London Borough of Hounslow.

Faced with a deteriorating, under-strength river crossing, the council's engineers turned to fibre-reinforced plastic for a solution. They were advised by the advanced composites group of consultant Tony Gee, who designed a scheme which combined corrosion inhibitor treatment for the existing steel reinforcement, a specially formulated spray-applied repair mortar and an external strengthening scheme incorporating carbon fibre reinforced plastic laminates.

A design and construct contract was awarded to specialist Structural Renovations with Tony Gee acting as designer. In the absence of established Codes of Practice, the design and application procedures used were developed from research in Europe, the USA and Japan.

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