In the context of aggregates, the term "flakiness index" refers to
- AThe angularity of the particles
- BThe percentage of flat and elongated particlesCorrect
- CThe hardness of the aggregate
- DThe porosity of the aggregate
Solution
Concept
Flakiness index
Step-by-step solution
1. Flakiness index is the percentage of flaky particles (thickness less than 0.6 of mean size).
Explanation
It describes the shape of aggregate particles.
Why the other options are wrong
Angularity is measured by angularity number, hardness by abrasion tests.
Shortcut
Flakiness = shape.
Correct answer: B) The percentage of flat and elongated particles