Question

What is the slump used for lightweight concrete that can be placed under conditions that would normally require a slump of 3 to 5 inches for normal-weight concrete?

1) 1 to 2 inches
2) 2 to 3 inches
3) 3 to 4 inches
4) 4 to 6 inches

Answer 1

The equivalent slump range for lightweight concrete, where normal-weight concrete requires a slump of 3 to 5 inches, is 3 to 4 inches. This ensures effective placement and compaction of the lightweight concrete.

Step-by-step explanation:

The question is about the slump measure used in the context of lightweight concrete. The slump test is a means of assessing the consistency and workability of the concrete mix. For lightweight concrete that can be placed under conditions that would normally require a slump of 3 to 5 inches for normal-weight concrete, the equivalent slump range typically used is 3 to 4 inches.

It is crucial to choose the correct slump range to ensure that the concrete can be effectively placed and compacted without compromising its strength or durability.