Problem
1. With the help of appropriate sketches, explain the terms sphericity, flat particles, and angular particles. Explain how the surface texture of fine aggregate may influence the properties of concrete.
2. When present as deleterious substances in concrete aggregates, how can the following materials affect properties of concrete: clay lumps, silt, zinc sulfide, gypsum, humus?
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.