$.$ Why is it important to perform a sieve analysis test on fine aggregates $($sand$)$

for the use in concrete? $(3$ marks$)$

$1\mathrm{.}2.$ Provide calculations and results. $(5$ marks$)$

Total mass of sample............$($g$)$

Sieve Size

$($mm$)$

Individual

Mass

Retained

$($g$)$

Individual

Percentage

Retained

$(\%)$

Cumulative

Percentage

Retained

$(\%)$

Percentage

Material

Passed

Rounded

off $(\%)$

$10$

$7\mathrm{.}10$

$5\mathrm{.}00$

$2\mathrm{.}00$

$1\mathrm{.}00$

$0\mathrm{.}60$

$0\mathrm{.}30$

$0\mathrm{.}15$

$0\mathrm{.}075$

Fineness Modulus

$1\mathrm{.}3.$ Discuss the results and conclude by comparing them to the standard

specifications.