CM$3502$

In$-$class concrete mix design

Concrete is required for an exterior column located above ground where substantial freezing and thawing is not a concern. The $28-$day compressive strength should be $4,000l\frac{b}{i}{n}^2.$ The column dimensions are ${12}^{\text{'}\text{'}}$ by ${12}^{\text{'}\text{'}}$ with rebar spaced with $2^{\text{'}\text{'}}$ clear spacing and ${1\mathrm{.}5}^{\text{'}\text{'}}$ cover $($rebar to form$).$ The properties of the materials are as follows:

Cement: Type I $,$ specific gravity $=3\mathrm{.}15$

Coarse Aggregate: Bulk specific gravity $($SSD$)=2\mathrm{.}80$; absorption capacity $=2\%$; dry$-$rodded unit weight $=115l\frac{b}{f}{t}^3$; moisture content $=1\%$

Maximum coarse aggregate size availability: $\frac{1}{2}in,\frac{3}{4}in,1$ in or $1\mathrm{.}5$ in

Fine Aggregate: Bulk specific gravity $($SSD$)=2\mathrm{.}7$; absorption capacity $=1\mathrm{.}3\%$; moisture content $=3\mathrm{.}7\%$; fineness modulus $=2\mathrm{.}80$

Use Slump $1$ to $2$ inches, and no air entraining

Calculate the initial weights of water, cement, dry rodded coarse aggregate, $($SSD$)$ coarse aggregate, $($SSD$)$ fine aggregate, and volume of air per $y{d}^3$ of concrete. Calculate the final weights $($after moisture adjustments$)$ of cement, coarse aggregate $($stockpile$),$ fine aggregate $($stockpile$),$ and water to be added to the batch per $y{d}^3$ of concrete. Include units.

Initial Values

$($by Weight$)($Volume for Air$)$ include units

Final Values $($after moisture adjustments$)($by Weight$)$ Include units

Cement $=$

Dry Rodded Coarse Agg. $=$

$($SSD$)$ Coarse Agg. $$

Air $=$ Coarse Agg.$($stockpile$)=$

$($SSD$)$ Fine Agg. $=$ Fine Agg.$($stockpile$)=$