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.
I agree with Jason S. It gets about two thirds of its strength in 7 days Concrete is considered cured from a technical standpoint at 28 days.Most designs are based on the 28 days strength of the concrete mix.Most design mixes exceed the 28 day design stress before 28 days but that can vary depending on many variables.est Answer: It really depends on how wet the ground is and the ground temperature. As a rule you should wait at least a week before starting a construction project on new concrete, 30 days is even better.