just caught a bit of homes under the hammer heard red ash problems mentioned ...what is that ...never heard of it ....
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5 years ago
red ash ?
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5 years ago
'Sulphate-bearing hardcore' it says here:
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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.
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5 years ago
^^^^^^^^^^^^^^ Were the early nighties followed by the naughties? :-)
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5 years ago
Is this the new ailment that makes the leaves look like pom poms and means the tree has to be taken down and everything burned? Brian
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5 years ago
Shoulda used SRPC
NT
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5 years ago
When colliery waste tips caught fire, they burned for years. The resulting ash was red and used as aggregate for all sorts of things when the tip burned itself out. Mostly in the 1960's
Wasn't aware it caused problems. Have to do some research.
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5 years ago
Found this:-
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5 years ago
As yongster we had 2 tips near us that we used to play on. One was known as the blacky bing and the other as the red bing. (obvious why) The red bing smoulderd for years until they eventually dismantled it and used it for building roads that would have been in the 60s 70s.
This was another:
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And some images of a red bing:
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5 years ago
Gotta love the sort of gardening you do with bulldozers dump trucks and JCBs....
Looks great for trailbiking
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5 years ago
Red Ash is burnt out coal spoil waste. Its found in the middle of coal mine slag heaps. It was used to fill in the middle of houses to bring the floor level up then a concrete screed lay on top. It was found that some of the acids in the ash caused the screed to disintegrate.
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5 years ago
The land will be permanently polluted with heavy metals, maybe even radioactive. The last place you want to buy a house is there.
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5 years ago
Indeed. Suphurous coal will in addition to meiting Sulphur oxides make certain sulhur style comounds with te dah, taht can turn to sulphuhuric acid when wet.
Turning cement from insoluble carbonates to soluble sulphates over time. Same as brick acid.