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Birds help Crossrail hit recycling target

London’s Crossrail project has so far recycled almost all its construction and demolition waste.

Its sustainability report for 2012 (attached to the right) said the bulk of material has been sent by rail and ship to Wallasea Island, on the Essex coast, to help to create a bird sanctuary.

Crossrail generates waste from both tunnel excavation and demolition of buildings.

It has signed the Government’s ‘halving waste to landfill’ commitment and between January 2009 and March 2012, 95% of the 68,000 tonnes of construction waste was reused or recycled, as was 97% of the 125,800 tonnes of demolition waste.

The project is also committed to a target of 15% recycled content by value across the programme, with a stretch target of 20%.

It said this was being exceeded by the station foundation works contracts and Royal Oak portal construction.

Managers remained confident the targets would be met despite the percentages achievable being lowered by the concrete mixes needed for tunnel lining segments of the work and the use of sprayed concrete for station lining.

Crossrail’s chief executive Andrew Wolstenholme said: “Crossrail is setting new standards ranging from recycling and energy efficiency through to future rail operations.”

Crossrail’s completion will see a new heavy rail line bored beneath central London allowing trains to run across the capital from Maidenhead and Heathrow in the west to Shenfield and Abbey Wood in the east.

Case study – Limmo Peninsula

At Crossrail’s tunnelling site on the Limmo Peninsula on the River Lea in east London, contractor Dragados Sisk founded waste that included timber sleepers, concrete, old tyres and contaminated soils.

It worked with Crossrail to find ways to reuse or recycle 98% of this material - concrete was crushed for fill, timber shredded as chipboard, tyres shredded to use in equestrian gallops and scrap metal was recycled.

Contaminated soils were cleaned and used to remediate a landfill site.


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