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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
Ductile iron pipes vs. mild steel pipes as pressurized pipelines For water main pipe size less than 600mm, ductile iron is generally used since internal welding for steel pipe
How to prove varignon theorem in easiest way
A point charge q2 = -2.3 µC is fixed at the origin of a co-ordinate system as shown. Another point charge q1 = 4.0 µC is is initially located at point P, a distance d1 = 6.0 cm fro
Uses of Cement Cement is utilized widely for the construction of several structures. Some of them are listed below: (i) Cement slurry is utilized for filling cracks in concr
Q. Fire resistance of steelwork Because of the high thermal conductivity of steel, temperature of unprotected steel is almost the same as temperature of fire. Because the yiel
State an expression for 'zero air-void line' and illustrate the line for a specific gravity of 2.65. What are the various factors that affect the compaction of soil in the field
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What is the Design Mix concrete Determination of the proportions of cement, aggregates and water to achieve the required strengths in concrete is made by designing the con
#questionwhat is the shear force and bending moment..
Figure, working,principle of prismatic compass
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