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What a concrete moisture barrier is. How many times a day do you see a
concrete surface? The pavement you’re walking on? The outside of the
building you work in? The bridge you drive over? The answer is more then
you might think. Concrete is subject to damage by moisture. This is
simply a fact. Ever notice the cracks in the sidewalk? They don’t get
smaller every year. Water freezing and melting during the winter is
about the worst thing for concrete save handy work with a jackhammer.
When water freezes, it expands. If it gets into the cracks too small to
see and freezes, it begins to push them apart. The wider and deeper the
fissure gets, the more water it can hold, and the farther apart it is
pushed. Even though they may start on the microscopic level, you soon
have cracks running deep through your pavement. Even if the water
doesn’t freeze, it can weaken your concrete substantially. Water resting
against or running over concrete starts to break down the bonds holding
the cement together and so it will eventually disintegrate.
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