Slump test is a measure of ………….
Correct Answer: D. Consistency
📚 Detailed Explanation: Slump Test Measures Consistency
Why D (Consistency) is correct: The slump test is the standard field test for consistency of fresh concrete mixes. Consistency refers to the ability of the concrete to flow, which directly relates to its workability. Options A (tensile strength) and B (compressive strength) are properties of hardened concrete measured on cured specimens. Option C (impact value) is an aggregate property test (IS 2386 Part 4). The slump test gives an immediate, simple measure of freshly mixed concrete fluidity.
What Slump Actually Measures
| Term | Meaning in Context of Slump Test |
|---|---|
| Consistency | Fluidity / wetness of the mix — what slump directly measures |
| Workability | Ease of placing and compacting — inferred from consistency |
| Slump value | Fall in height (mm) of concrete cone after mould removal |
- Slump test = measures consistency of fresh concrete.
- Both “consistency” and “workability” are acceptable answers in most textbooks; consistency is technically the more precise term for what slump directly quantifies.