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Prime Coat:
A prime coat is the application of a low viscosity binder, usually a bituminous emulsion, to a gravel, WBM or WMM surface, to enable the binder to fill up the voids. The rate of application is 0.6-1.5 Kg per sq m of the surface, the quantity depending upon the porosity of the surface. The application is done by a mechanical sprayer or by hand operated spraying lance.
Tack Coat
The tack coat is a bituminous application over a primed granular surface or an existing bituminous surface to promote a bond between it and the bituminous layers coming above. The tack coat is normally done with a bituminous emulsion at a rate of 0.2 to 0.45 Kg per sq m, depending upon the type of surface. Like a prime coat, the tack coat is applied by spraying with a mechanical sprayer or a hand held lance.
a) Explain with a neat sketch how will you carry out the wash boring method of soil exploration. What are its merits and demerits? b) Describe the terms 'inside clearance' and '
Q. Energy absorbed in heeling during vessel berthing? When a vessel berths on a fender system at a pier, point of contact of berthing ship can be below or above the centre of
The diameter of an electric cable, say X, is assumed to be continous random variable with pdf;f(x)=6x(1-x), 0 b}.
hi sir. i hope every thing is fine with you. I want to have an information about the way how to compute stream flow from the rainfall over the catchment and anso need the way how t
Q. Explain the process of Directed Track Maintenance? DTM is a method to maintain the track is directed every day and not as a prescribed routine. DTM essentially consists of n
show that Y = 4e2x - 2e-3x is a solution of initial-value problem (d2y)/(dx2)+ (dy)/(dx) - 6y=0 ; y(0)=6 ; y’(0)=2 . is Y = 2e2x - 4e-3x also a solution of this proble
what is end condition how effected length is calculated
Properties of Bricks The required properties of good bricks are following: A. Color: Color should be bright and uniform. B. Shape: Bricks should have plane faces.
what is material of wmm plant
Q. Show the Earth pressure on abutment? The magnitude of earth pressure coefficient in calculating the earth pressure on bridge abutment reliesconsiderably on the degree of res
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