The flakiness index of an aggregate indicates the proportion of particles that are
Correct answer: B. Thin compared with their length and width
- A. Long compared with their average diameter
- B. Thin compared with their length and width
- C. Easily crushed under a compressive load
- D. Porous because of internal voids
Explanation
Flaky particles have a small thickness compared with their other dimensions. Elongated particles are assessed by the elongation index, while crushing and porosity require separate tests.
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Concrete technology covers cement, aggregates, water and admixtures, including their properties, proportioning and effect on fresh and hardened concrete. It explains workability, water-cement ratio, setting, hydration, strength, durability, curing, mix design and common defects, while distinguishing segregation and bleeding from general loss of workability.
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