Which activities are carried out during concreting?

• A. Batching
• B. Placing
• C. Compaction
• D. ALL OF THESE

Answer: (D)

The main idea is that concreting involves a sequence of essential activities, and each listed item is part of that process. Batching sets the correct proportions of cement, water, aggregates, and admixtures according to the mix design. Placing is the act of delivering and depositing the fresh concrete into formwork or into the area to be cast. Compaction uses vibration or other methods to consolidate the concrete, remove air voids, and achieve the desired density and strength. Since all three steps are integral parts of a concrete placement, the best choice is the one that includes all of these activities. (Note that finishing and curing are also part of the broader concreting process, but they aren’t needed to answer this item.)