In article ,
Martin wrote:
On Thu, 28 Nov 2013 09:36:36 +0000, Broadback
wrote:

Can anyone recommend a suitable product to do this, the pavioured area
is quite large.

Any of the commercial products that contain ferrous sulphate.

Thus changing the problem from a soluble one to an insoluble one.
There is no known way of removing rust stains from concrete
without damaging the concrete and with any degree of permanence.


Regards,
Nick Maclaren.