Question

An aggregate is termed as flaky if _____

• A. Its least lateral dimension is less than 0.6 times its mean dimension
• B. Its length is 1.8 times more than its mean dimension
• C. Its least lateral dimension is less than 1.8 times its mean dimension
• D. Its length is 0.6 times more than its mean dimension

Answer 1

The correct option is A Its least lateral dimension is less than 0.6 times its mean dimension

Flakiness index is the percentage by Weight of aggregate particles whose least lateral dimension is less than 0.6 of their mean diameter.
$\text{For flaky index slot size}=0.6\times \left(\frac{x+y}{2}\right)$
x = aggregate size of dimension
y = aggregate size of dimension
This test is not applicable to aggregate size > 6.3 mm.