The Constant Head Permeability apparatus is used for testing the permeability of granular soils (sand and gravels). The specimen is formed in a permeability cell and water is passed through it from a constant level tank.
The constant head permeability test is a common laboratory testing method used to determine the permeability of granular soils like sands and gravels containing little or no silt. This testing method is made for testing reconstituted or disturbed granular soil samples.
What is the use of permeability test?
The test results of the permeability experiments are used:
1.To estimate ground water flow.
2.To calculate seepage through dams.
3.To find out the rate of consolidation and settlement of structures.