Provided Information

Aggregate Grading Curves

Grading $1$: For $25\mathrm{.}0$MPa$-25\mathrm{.}5$MPa

$\backslash$table$[[$Sieve Size $($mm$),$Cumulative Percentage Passing$],[20,100],[14,95],[10,75],[5,55],[2\mathrm{.}36,40],[1\mathrm{.}18,30],[0\mathrm{.}6,22],[0\mathrm{.}3,12],[0\mathrm{.}15,5],[0\mathrm{.}075,2]]$

Grading $2$: For $25\mathrm{.}51$MPa $-25\mathrm{.}99$MPa

$\backslash$table$[[$Sieve Size $($mm$),$Cumulative Percentage Passing$],[20,100],[14,98],[10,80],[5,60],[2\mathrm{.}36,45],[1\mathrm{.}18,35],[0\mathrm{.}6,25],[0\mathrm{.}3,15],[0\mathrm{.}15,7],[0\mathrm{.}075,3]]$

Grading $3$: For $26\mathrm{.}0$ MPa and above

$\backslash$table$[[$Sieve Size $($mm$),$Cumulative Percentage Passing$],[20,100],[14,100],[10,85],[5,65],[2\mathrm{.}36,50],[1\mathrm{.}18,38],[0\mathrm{.}6,28],[0\mathrm{.}3,18],[0\mathrm{.}15,9],[0\mathrm{.}075,4]]$

Suggested water$/$cement ratios:

For $25\mathrm{.}0-25\mathrm{.}5$ MPa concrete: $0\mathrm{.}50-0\mathrm{.}55$

For $25\mathrm{.}51-25\mathrm{.}99$ MPa concrete: $0\mathrm{.}47-0\mathrm{.}52$

For $26\mathrm{.}0-26\mathrm{.}5$ MPa concrete: $0\mathrm{.}45-0\mathrm{.}50$

Hints $($to help you do the calculations$)$

Compressive Strength $(MPa)=$ Force $\frac{N}{?}$ Area $(m{m}^2)$

Density $(k\frac{g}{m^3})=$ Mass $\frac{kg}{V}$olume$(m^3)$

Calculating Area:

Area $(m{m}^2)=$ Length $(mm)$ Width $(mm)$

Calculating Volume:

Volume $(m{m}^3)=$ Length $(mm)$ Width $(mm)$ Height $(mm)$

Calculating Density:

Density $(k\frac{g}{m^3})=$ Mass $(g)$ Volume $(m{m}^3)1,000,000$