Problem
1. Theoretically derived ideal gradings of aggregates for maximum density should be the most economical, yet the practice is not followed. Can you explain why?
2. In mix designing, why is it desirable to use a minimum amount of water? For a given slump, how can you reduce the amount of water?
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.