Assignment # $2$

CE $308$

Submission deadline: $25-04-2024$

Design a concrete mix for specified design strength of concrete of $21$MPa at $28$ days. OPC TYPE I with air entraining is used & slump of $80mm$ is necessary. Mild exposure.

Properties of Aggregate to be used:

$\backslash$table$[[,$Coarse Aggregate,Fine Aggregate$],[$Dry bulk specific gravity,$2\mathrm{.}80,2\mathrm{.}60],[$Absorption$,0\mathrm{.}50,0\mathrm{.}70],[$Natural misture,$0\mathrm{.}40,0\mathrm{.}45],[$Dry$-$rodded unit weight,$1600K\frac{g}{m^3},-],[\backslash$table$[[$Nominal maximum size$],[$of aggregate$]],19mm,-],[$Fineness modulus,$-,2\mathrm{.}70],[,,]]$

Tables to be used:

$\backslash$table$[[\{$

$\backslash$table$[[$Nominal maximum$],[$size of aggregate,$],[$mm $($in$.)]]\},\backslash$table$[[$Bulk volume of dry$-$rodded coarse$],[$aggregate per unit volume of concrete for$],[$different fineness moduli of fine$],[$aggregate$]],,,,,,,,],[,2\mathrm{.}60,2\mathrm{.}80,3\mathrm{.}00,\{$

$\backslash$table$[[$Specified$],[$compressive$],[$strength$,$ fc$,],[MPa$