Problem
1. With the help of suitable curves, show how accelerating and retarding admixtures affect the setting time of a concrete mixture.
2. Briefly discuss the effect of temperature on the setting time of concrete. What is the most efficient way of reducing the temperature of a fresh concrete mixture? Explain why.
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.