Proportioning of concrete

Example: Find the masses of the components on a wet basis

Concrete specifications and data

Require average compressive strength 240 kg/cm2

Slump 75 to 100 mmMaximum size of coarse aggregate 37.5 mmDry-rodded mass of coarse aggregate 1600 kg/m3

Bulk specific gravity of coarse aggregate 2.68Absorption of coarse aggregate 0.5 %Bulk specific gravity of fine aggregate 2.64Absorption of fine aggregate 0.7 %Fineness modulusCement type I specific gravity Total moisture of coarse aggregateTotal moisture of fine aggregate

2.83.152%6%