On 21/03/2019 14:25, Chris Hogg wrote:
On Thu, 21 Mar 2019 13:33:29 +0000, "Jim GM4DHJ ..."
wrote:

On 21/03/2019 12:05, Chris Hogg wrote:
On Thu, 21 Mar 2019 11:29:08 +0000, "Jim GM4DHJ ..."
wrote:

just caught a bit of homes under the hammer heard red ash problems
mentioned ...what is that ...never heard of it ....

'Sulphate-bearing hardcore' it says he
http://www.cpservicesuk.com/red-ash-...--removal.html
The sulphate reacts with the overlying concrete screed, causing the
latter to expand, bulge and crack. A problem common in coal mining
areas, apparently. Although why it's called 'red ash' isn't explained.

right saw that kind of thing happen to a new warehouse floor at glasgow
airport in the early nighties...thanks
^^^^^^^^^^^^^^
Were the early nighties followed by the naughties? :-)

pedant.....tee hee

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