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Tyre shred on Cambridge busway a winner

NISP's expertise has helped BAM Nuttall beat off stiff competition from the likes of Balfour Beatty and Thames Water, to win an award at the recent Chartered Institute of Wastes Management Environment Excellence Awards for the innovative use of materials in a construction project.

Cambridgeshire County Council contracted BAM Nuttall to design and build the Cambridgeshire Guided Busway scheme, which once complete is set to be the world's longest busway covering a distance of more than 26km.

Having already sourced 3,000 tonnes of crushed concrete for BAM Nuttall to use in the scheme, the company called on NISP's expertise once more to help source 40,000 m3 of an alternative material to be used as infill for the full length of the guideway ladder beams in place of virgin aggregate.

NISP's East of England team explored a number of reprocessed material alternatives including recycled crushed glass, crushed concrete, natural gravels and rubber tyre shred.

Rob Bresler, who led NISP's involvement in the scheme, said: “BAM NUTTALL used reprocessed tyre shred for the scheme because it's environmentally sound, inexpensive and lightweight, sufficient quantities are readily available and it's compliant with the relevant deign and specification requirements.”

“The use of tyre shred in place of virgin material costs significantly less saving the scheme many thousands of pounds. To meet the project's requirements more than 60,000 tonnes of virgin aggregate would have been required and by using a sustainable alternative the scheme has also reduced harmful greenhouse gas emissions – something that both BAM Nuttall and its client were keen to effect.”

Simon Whalley, Project Manager for BAM Nuttall, said: “NISP has come up trumps again sourcing materials through their many contacts and assisting us with relevant Environment Agency paperwork – greatly appreciated.”

The £116 million guideway project is expected to be completed by late summer 2009.

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