Problem
1. What are the assumptions underlying the formulas used by the ACI Building Code and the CEB-FIP Model Code for predicting the static elastic modulus of concrete? Can you point out any limitations of these formulas?
2. How does the moisture state of a concrete test specimen affect the elastic modulus and strength values? Explain why both properties are not affected in the same manner.
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.