Problem
What are harmful manifestations of plastic shrinkage of concrete in (a) reinforced columns and (b) slabs? Assuming that the air temperature is 21oC, the concrete temperature is 24oC, and the wind velocity is 30 km/h, determine the rate of evaporation. If this rate is too high from the standpoint of risk of plastic-shrinkage cracking, what precautionary measures would you take? Alternatively, determine the temperature to which concrete must be cooled to reduce the rate of evaporation to a safe limit.
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.