ASABE Technical Library - Abstract

Click on “Download PDF” for the PDF version or on the title for the HTML version.
If you are not an ASABE member or if your employer has not arranged for access to the full-text, view access and subscription options

Modified Slake Durability Test Applicability for Soil

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  International Symposium on Erosion and Landscape Evolution (ISELE), 18-21 September 2011, Anchorage, Alaska  711P0311cd Paper #11007.(doi:10.13031/2013.39209)
Authors:   Jeffrey R Keaton
Keywords:   Slake durability, Soil material, Scour number, Shear stress, Stream power

Rock scour research conducted for National Cooperative Highway Research Program Project No. 24-29 used a modification of the conventional slake durability test to develop a geotechnical scour number (equivalent scour depth divided by equivalent stream power) for degradable weak rocks (Keaton and Mishra, 2010). The physical difference between weak rock and strong soil can be minor; therefore, the modified test should be applicable for cohesive and weakly cemented soil materials. Cohesionless soils would not survive the sample preparation process for the test. Durable coarse sand or gravel fragments in some soils can dominate the retained weight during the modified test, as well as tend to pulverize the soil matrix. Highly plastic clay could adhere to the drum or each other. The objectives of this paper are to describe the modified test procedure and discuss its applicability for soil materials, with a hypothetical example based on Hortons (1945) belt of no erosion.

(Download PDF)    (Export to EndNotes)