Formation of Frost Heave
Explain the mechanism in the formation of Frost Heave?
Expert
Earlier, it was believed that the formation of frost heave was associated with the volumetric expansion of soil water which gets changed from liquid to solid state. However, increase of volume of changes in states for water at zero degree Celsius is only about 9%.
The mechanism of frost heave is best described by the formation of ice lenses. When the weather is cold, ice lenses develop in freezing zone in soils where there is a sufficient soil water supply. Particles of soil are surrounded by a water film, this separates the soil particles from the ice lenses. The moisture of soil particles gets absorbed by the ice lenses on top of the soil and in turn water is acquired from other soil pores to replenish the water loss to ice lenses. This process goes on and results in pushing up of the soil on top of the lenses and consequently the formation of frost heave.
Write short note on Steam Turbines.
State the working principle of Nuclear Power Plant.
Specify some of the features of vapour compression refrigeration system and vapour absorption refrigeration system.
Discuss scaling in the Boiler and its effect?
Write down the functions of a lubrication system in the IC engines?
Average density of soil: For the aims of civil engineering, an average soil will have a density of around 100 to 110 pounds per cubic foot. (This can differ a little depending on how well compacted the soil is).
List the chief factors which are used for comparing Diesel, Otto and Dual cycles.
Describe the function of Camshaft and Crank shaft?
Whether sheets or geo-grids can replace reinforcing elements in soil nails?
What are the various factors that influencing the choice of piles during construction?
18,76,764
1939146 Asked
3,689
Active Tutors
1413162
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!