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Concrete Pavement:
Thickness
The thickness of concrete pavements is determined from the stresses induced due to loads and temperature. The thickness adopted is generally 30-35 cm for highways and 15-20 cm for low volume roads. The concrete used is of high strength and is of M-40 grade for highways and not less than M-35 for low volume roads.
A sub-base of 100-150 mm thick dry lean concrete (DLC) of strength M-10 is provided below the pavement layer. An antifriction layer of plastic sheet 125 micron is provided between the slab and DLC. A drainage layer is provided for draining any water that enters the sub-grade.
Q. Free- fall concrete placement in bored piles? Based on the research by STS Consultants Ltd it was found that concrete placed by free falling below 120 feet will not suffer f
In carrying out pull-out tests for soil nails, it generally requires the unloading and loading of soil nails of several cycles up to 80% of ultimate tensile strength of soil nails.
Feactures and uses of distomat
what are the cement testing?
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Define Alkali Aggregate Reaction - Chemical deterioration? Sometimes high alkali cement reacts with minerals in certain aggregates and forms expansive compounds resulting into
Resultant Force on a Given Area of a Horizontal Plane By equation, the total vertical force applied to an area A on the plane is: Resultant Force R = ΡA = (lb/ft 2 )(ft 2 )
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Geometric Design Of Roads: Geometric design of roads deals with elements such as cross-section, horizontal and vertical alignment, sight distances, lateral and vertical cleara
Q. What is Rail Lubrication? Rail Lubrication is done on sharp curves where lateral wear is considerable. The function of Rail Lubrication is to lubricate or oil the running fa
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