Question

The fineness modulus of the fine aggregates should be between

• A. 2 to 3
• B. 3 to 4
• C. 4 to 5
• D. 5 to 6

Answer 1

The correct option is A 2 to 3

Fineness modulus is a numerical index of finencess gives some idea about the mean size of the particles in the aggregate.
$\begin{array}{cc}\text{Aggregate}& \text{Fineness Modulus}\\ \text{Fine aggregate}& 2.0to3.5\left(\text{in general}3.05\right)\\ \text{Coarse aggregate}& 6.0to8.5\left(\text{in general}6.93\right)\\ \text{Mix aggregate}& 3.5to6.5\\ \text{Fine sand}& 2.2to2.6\\ \text{Medium sand}& 2.6to2.9\\ \text{Coarse sand}& 2.9to3.2\end{array}$