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Que. A concrete column used in bridge construction is cylindrical in shape with a diameter of 1 meter. The column is completely poured in a short interval of time and the hydration of concrete results in the equivalent of a uniform source strength of 0.7 W/kg. Determine the temperature at the center of the cylinder at a time when the outside surface temperature is 75 degree Celsius. The column is sufficiently long so that temperature variation along its length may be neglected. For concrete
Average thermal conductivity = 0.95 W/m K
Average density = 2300 kg/m³
a. 190.92 degree Celsius
b. 180.92 degree Celsius
c. 170.92 degree Celsius
d. 160.92 degree Celsius
Correct Answer:180.92 degree Celsius
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