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Flowing over the flood Huge concrete pours are a major feature of Mowlem's M4 underbridge construction contract west of London. Dave Parker reports on the project and the traffic diversion needed to k

Thursday 9 July saw a massive 650m3 of high strength concrete delivered to John Mowlem's site on the M4 near Maidenhead in less than 12 hours. Supplied by Ready Mixed Concrete (Transite) the C40 mix was placed and finished by specialist subcontractor Magnum Construction. This was the last of two bridge deck pours - the first had been successfully completed a week earlier - and its completion was a major milestone in a hectic programme.

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