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Soil and Composting: "Road Scrapings"

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raeben
Great Falls, VA
(Zone 6b)

November 24, 2013
4:48 PM

Post #9715885

Many older British gardening volumes recommend the addition of "road scrapings" to lighten the soil. Other more familiar amendments -- leaf mold, sand, and lime are mentioned as well.

But what on earth were they referring to by the term "road scrapings"? What was in the roads of those days that would have made them a useful soil amendment?

Anyone?

sallyg

sallyg
Anne Arundel,, MD
(Zone 7b)

November 24, 2013
7:58 PM

Post #9715963

that's odd. I don't think they'd be shy about saying manure. But could it have been a euphemism for manure on the road? Is the book that old?
coleup
annapolis, MD
(Zone 7b)

November 24, 2013
9:48 PM

Post #9715988

http://www.mainlandaggregates.co.uk/products/Road-PlaningsScalpings-Su.asp

"Consists of: An aggregate produced by a cold milling machine. The machine is used to remove the surface layer of a tarmaced area such as a highway or footpath. The resulting waste is loaded into a lorry and is officially known as Road Planings although many refer to them as Road Scalpings or Road Scrapings."

"Road Planings are not suitable as backfill for drainage trenches due to the high fines content and care must be taken when sourcing them as older tarmac surfaces which have been deep planed may contain tars. The use of Road Planings is generally considered environmentally sound as Bitumen is a natural substance. Using them also reduces pressure on quarried aggregate stocks.

Unfortunately the days of being to obtain Road Scalpings for free have gone as the pressure of the recession on local authorites has resulted in very little resurfacing work be carried out and thus Road Planings are not as abundant as they once were."

sallyg

sallyg
Anne Arundel,, MD
(Zone 7b)

November 25, 2013
4:21 AM

Post #9716068

thanks coleup!

That is not something that I would put in the garden anyway. Road waste, what about heavy metals and oils and other nasty mechanical stuff? Neither the texture high fines , (too high for drainage ditch) nor the chemical content sounds like something the soil would like.

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