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Concrete
Moisture Vapor Barriers
THE
PROBLEM - INTERIOR SLAB MOISTURE
"Vapor
barriers are becoming one of the least expensive most significant
front line construction requisites in terms of importance. By
taking the ground out of play, the moisture that is internal to
the substrate is the only construction concern in a closed in
building substrate. By leaving the substrate exposed to the soil
and moisture, the potential for problems is a real possibility.
Carbonation, moisture migration, biodegradability, and ASR are
all potential detriments to long term structural integrity and
performance issues without quality vapor barriers."
How do concrete design, placement, cure, and permeability
relate to vapor drive?
What are concrete vapor emission characteristics
(the damage potential)?
What are the mechanisms influencing vapor emissions?
What are the ancillary sources of consequential moisture?
Why
do renovated surfaces with functional floor in place for years
suddenly fail after renovation
with
or without vapor retarders (barriers)?
In what way could vapor emission contribute to indoor
air quality issues (IAQ)?
Is alkalinity really that big a deal and what causes
it?
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