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When
is concrete
no longer
concrete?
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|
When
it grows
mushrooms.
This old
poor-quality
concrete
was probably
made from
round
river-rock
and beach
sand.
Moisture
movement
through
time has
caused
the concrete
to return
to its
original
components.
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Roofing Tips |  |
Decks |
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Earthquakes |  |
General | ||||||||||||||||
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Home Safety |  |
Electrical |  |
Electrical Panels |  |
Plumbing | ||||||||||||||||
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Water Heaters |  |
Flue Gas |  |
Old Houses |  |
New Construction | ||||||||||||||||
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