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Q. Function of prime coat in bituminous pavement?
The main function of prime coat in bituminous pavement is to protect the subgrade from weathering andmoisture. Because the presence of moisture affects the strength of subgrade, prevention of water entry at the time of construction is essential to avoid the failure of the pavement. In cold countries, by getting rid of moisture from subgrade, danger of frost heave can be minimized.
Prime coat is an asphalt that, when applied evenly to the surface of subgrade orsub-base, serves to seal the surface to hinder the penetration of moisture into subgrade. Vehicular traffic must be avoided on the surface sprayed with prime coat since the traction and tearing action of vehicles would damage this asphalt layer.
Fig: Position of application of prime coat
Determine the stage of Cracking moment of pre-stress At the stage of transfer of pre-stress in the pre-stressed beam element, only the pre-stressing force and the self weight
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A machine weighing 500 kN is mounted on a concrete block resting on soil. The base area of the block is 25 m 2 , and the weight is 100 kN. The coefficient of elastic uniform com
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