Pier and Contraction Scour in Cohesive Soils (2004) / Chapter Skim
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2.4 Erodibility and Correlation to Soil and Rock Properties
2.4 Erodibility and Correlation to Soil and Rock Properties
Pages 10-13
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From page 10... ...
The factors influencing the erodibility of cohesive soils according to the literature survey are listed in Table 2.1. Although conflicting findings sometimes occur, the influence of various factors on cohesive soil erodibility is shown in Table 2.1.
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From page 11... ...
When this parameter increases Erodibility Soil water content Soil unit weight decreases Soil plasticity index decreases Soil undrained shear strength increases Soil void ratio increases Soil swell increases Soil mean grain size Soil percent passing sieve #200 decreases Soil clay minerals Soil dispersion ratio increases Soil cation exchange capacity Soil sodium absorption ratio increases Soil pH *
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From page 12... ...
The fact that in this project no relationship could be found between the critical shear stress or the initial slope of the erosion function and common soil properties seems to be at odds with the accepted idea that different cohesive soils erode at different rates. Indeed, if different clays erode at different rates, then the erosion function and therefore its parameters should be functions of the soil properties.
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From page 13... ...
Erosion properties as a function of percent passing sieve #200.
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