1) What is meant by capillary rise in soil? How does it affect the pre-water pressure?

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1)  What is meant by capillary rise in soil? How does it affect the pre-water pressure?

 

Capillary rise in soil refers to the upward movement of water through the soil pores due to capillary action, which is the result of surface tension and the adhesion of water molecules to soil particles. This phenomenon is especially significant in fine-grained soils (like silts and clays) because they have smaller pores that create stronger capillary forces.

 

Effect on Pore Water Pressure:

 

1)     Negative Pressure

2)     Increased inter granular pressure

3)     Enhanced effective stress

4)     Saturation effects

 


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