depends on the thickness and the water content, 3-4 days is safe for all
Imediatly after trowling
probably about 30-50 years
before plcement in any mold with out compction is the fresh concrete. or just after plceing the concrete before initial setting is the fresh concrete.
First of all, concrete does not "dry" to become hard. It cures, which is a chemical interaction between its water and its portland cement. Usually, a couple of hours is plenty of time for concrete to 'set' enough to not be damaged by rain. The best and strongest concrete never dries out for the first 28 days from pouring it.
2 days
Imediatly after trowling
ideally 28 days
127 hours
probably about 30-50 years
At least 3 days
before plcement in any mold with out compction is the fresh concrete. or just after plceing the concrete before initial setting is the fresh concrete.
A cement anchor is a general term to describe a fastner that is attached to concrete. Common concrete anchors have a lead tip that mushrooms and "grabs" the concrete. Usually a hole is first drilled into the concrete. Then a concrete anchor is driven into the hole using a hammer. This allows for attaching wood or metal to concrete.
How long will a driveway of concrete last in Louisiana?
Yes. . it is concrete. . and it is close. . ever driven through a tunnel, even a short one, and had problems with radio reception. So yes. . a concrete wall could reduce signal
yes because before you pour the concrete down it is a soft liquid................
The Persians.
theywork well as long as you can get the existing concrete clean enough