Engineering Materials·MCQ explained

Slump test is a measure of .............

Try it first: pick an option, then read the explanation.

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

TermMeaning in Context of Slump Test
ConsistencyFluidity / wetness of the mix — what slump directly measures
WorkabilityEase of placing and compacting — inferred from consistency
Slump valueFall 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.