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Q: Keeping the shape of coarse aggregate as the only parameter. Identify the type of aggregate which adversely affects the durability of concrete.
  • A. Angular
  • B. Irregular
  • C. Rounded
  • D. Flaky
Correct Answer: Option D - Flaky aggregate are less durable and given lesser strength as compare to other given shape of aggregate. • Strength (increasing order) Flaky < Rounded < Irregular < Angular < cubical.
D. Flaky aggregate are less durable and given lesser strength as compare to other given shape of aggregate. • Strength (increasing order) Flaky < Rounded < Irregular < Angular < cubical.

Explanations:

Flaky aggregate are less durable and given lesser strength as compare to other given shape of aggregate. • Strength (increasing order) Flaky < Rounded < Irregular < Angular < cubical.