Stabilizing old crumbly concrete


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Old 11-24-05, 04:04 AM
J
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Stabilizing old crumbly concrete

There is a section in a concrete wall that is old and crumbly, and has a hole that I'd like to fill. When I wire brush this old concrete I can see that I might be able to wire brush right through if I kept at it long enough. I'd like to find something that I could apply over this old concrete to stabilize it so that I could then patch the hole. Is there anything that would work for this?

John
 
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Old 11-25-05, 01:46 PM
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Unless you could encase the failed concrete, replacing it will be the only reliable course of action.
 
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Old 11-26-05, 01:01 PM
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Could you explain what you mean be encase, and how this is done?

John
 
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Old 11-26-05, 01:15 PM
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Stabilizing old crumbly concrete

I think what he means is cover it (top and sides) with several inches (preferably 4 inches) of concrete.

When concrete starts to crumble, it is difficult to have any patches adhere to it. If you can brush it away, that is a good sign it has little strength and stability. Possibly, the old concrete was not the best when it was poured.

Any patching would have a limited life.

Dick
 
 

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