Question #$3$: $(6$ marks$)[$ABET: $1\mathrm{.}1,1\mathrm{.}2,1\mathrm{.}3]$

Mix design calculation show a dry mix of $1$C: $2\mathrm{.}5FA$:$3\mathrm{.}5CA$:$0\mathrm{.}5W$ by weight with $2\%$ air.

Calculate the weight of cement required to make $3\mathrm{.}82m^3$ of this concrete. The

specific gravity values of cement, FA$,$ and CA are $3\mathrm{.}15,2\mathrm{.}65,$ and $2\mathrm{.}75$ respectively.

$[$ABET: $1\mathrm{.}2-3$ Marks$]$

The moisture content and absorption of coarse aggregate are $3\%$ and $1\%,$

respectively, and of fine aggregates, $8\%$ and $3\%,$ respectively. Find the field mix

proportions. $[$ABET: $1\mathrm{.}3-3$ Marks$]$

Appendix A: Graph for Exercise #$2$