search
arrow-left Previous
Next arrow-right
Q: An aggregate is said to be flaky if its least dimension is less than OR Flakiness index is % by weight of particles in it, where least dimension is less than :
  • A. 1/5th of mean dimension
  • B. 2/5th of mean dimension
  • C. 3/5th of mean dimension
  • D. 4/5th of mean dimension
Correct Answer: Option C - Flakiness Index Test–Percentage by weight of particles whose least dimension/thickness is less than 0.6 times of their mean dimension. Applicable to sizes larger than 6.3 mm. Elongation Index Test–Percentage by weight of particles whose greater dimension is more than 1.8 times their mean dimension. Applicable to size larger than 6.3 mm. Note–Flakiness Index test followed by elongation index test on the non-flaky aggregates.
C. Flakiness Index Test–Percentage by weight of particles whose least dimension/thickness is less than 0.6 times of their mean dimension. Applicable to sizes larger than 6.3 mm. Elongation Index Test–Percentage by weight of particles whose greater dimension is more than 1.8 times their mean dimension. Applicable to size larger than 6.3 mm. Note–Flakiness Index test followed by elongation index test on the non-flaky aggregates.

Explanations:

Flakiness Index Test–Percentage by weight of particles whose least dimension/thickness is less than 0.6 times of their mean dimension. Applicable to sizes larger than 6.3 mm. Elongation Index Test–Percentage by weight of particles whose greater dimension is more than 1.8 times their mean dimension. Applicable to size larger than 6.3 mm. Note–Flakiness Index test followed by elongation index test on the non-flaky aggregates.