Problem
A 33 MPa concrete is made with limestone aggregate. Suppose you replace 50 percent of the aggregate with solid steel balls (about the same size as the aggregates). Is the compressive strength going to increase? What about the elastic modulus? Please justify your answer.
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.