Fresh concrete is being placed into a tall wall form at a high rate on a cool day. The crew is concerned about lateral pressure on the forms. Which factor will MOST increase the lateral concrete pressure on the formwork?

Giải thích

Lateral form pressure increases with a faster rate of vertical rise because more of the concrete remains fluid before it stiffens. Slower placement, stiffer/lower-slump mixes, and warmer concrete (faster set) all reduce peak pressure. A faster placement rate is the dominant factor increasing pressure.