Problem
1. Explain the operations covered by the following terms, and discuss the significance of these operations: retempering, revibration, screeding, bull floating, and scoring.
2. What is the principle behind consolidation of concrete mixtures? Describe the sequence of actions that take place in a fresh concrete mixture when it is exposed to a high-frequency vibrator.
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.