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composting acids to remove concrete from brick

Posts: 1559
Location: Denver, CO
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I have a huge pile of pavers and brick, some of which has some mortar or concrete on it. (It is a little too thick to be mortar, but the aggregate is fairly small, too small to be regular concrete.)

Dale had a post somewhere about using a pile of decaying maple leaves to remove the cement.

Does he or anybody else know how long this would take?

Also, would other materials work? I don't have access to maple leaves, but I do have a lot of wood chips.

Some of the "bricks" are actually concrete pavers. I suppose that if it could remove the cement, it could also break down the paver surface; does anybody know how long this would take?
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