The following figure from the above paper shows Trends (in degrees Celsius per 100 years) for each 5 by 5 latitude-longitude grid box using only nonurban stations for annual maximum temperature, annual minimum temperature, and diurnal temperature range for the period 1950 to 1993.
Concrete continues to gain strength after pouring for as long as it retains moisture, but the longer it moist-cures, the slower the rate of strength gain. Moist-curing concrete for 20 days more than doubles its strength compared with four days of moist-curing, which is considered a minimum.oncrete continues to gain strength after pouring for as long as it retains moisture, but the longer it moist-cures, the slower the rate of strength gain. Moist-curing concrete for 20 days more than doubles its strength compared with four days of moist-curing, which is considered a minimum.
1 Remove the forms after the concrete thoroughly dries. 2  This will take at least 24 hours. 3  Keep the concrete wet for the next few days to avoid cracking. 4  Soak it with a hose at least twice daily, three times if it is very hot outside.5  Cover the pad if it looks like rain. Let the concrete dry. 2  Remove the forms after the concrete thoroughly dries. 3  This will take at least 24 hours. 4  Keep the concrete wet for the next few days to avoid cracking. 5  Soak it with a hose at least twice daily, three times if it is very hot outside. 6  Cover the pad if it looks like rain.