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Compact crushing

MANY products have been developed to recycle demolition waste but a Brighton-based contractor believes it is the first to come up with a way of recycling waste specifically for housing projects.

Adenstar Construction's mini concrete and block crusher has been devised by managing

director Derek Chapman and crushing specialist Parker Plant.

'While there are a lot of crushers for demolition contracts and quarries, nobody had ever thought of using it for housing sites,' says Mr Chapman.

A prototype of the as yet unnamed 5.5-tonne crusher is at work on Barratts Southern Counties' £50 million housing development at Brighton Marina. Adenstar is using the machine to recycle hardcore on the second phase of its £4.5 million groundwork contract.

Hardcore that has gone through the crusher can be re-used for sub-base on all the site's non-adoptable byways, such as footpaths and temporary access roads. With contractors charging £120 a truckload to clear the site and a further £150 a load to bring in fresh hardcore, the potential savings are clear. Mr Chapman estimates that the exercise saves the company £500 a week - half of Adenstar's clearance costs.

The machine's jaw crusher accepts a range of construction waste, taking anything from bricks to hot-rolled asphalt.

Material to be recycled is collected in standard one-tonne rollover skips and dropped in place by tele-


Pre-sorted waste can be fed directly into the machine, says Mr Chapman.

The crusher, mounted on skids, is jacked up over a skip sitting in a recess in the ground, so that crushed material falls into it - eliminating the need for a conveyor system.

It fills a one-tonne skip in an hour.

The prototype is generating 30 skiploads of waste a month and there is plenty over for Adenstar to use on other sites.

Mr Chapman says the crusher is about to be made available commercially, marketed jointly with Parker Plant and at a cost of between £31,000 and 32,000.

The prototype is generating 30 skiploads of waste a month