Problem
1. Mineral acids are accelerators for portland cement, but organic acids do not show a consistent behavior. Explain why.
2. Formic acid is an accelerator, while gluconic acid is a retarder. Explain why.
3. What type of admixtures would you recommend for concreting in: (i) hot weather, (ii) cold weather.
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.