Reclamation Information Sharing Environment (RISE)

The title of this test was Cracked Embankment Erosion Test (CEET) 7. This test took place on July 10, 2017. The material used was Highland Clay and had a Plasticity Index (PI) of 27, classified as a lean to fat clay (CH/CL), had 95.4% passing the No. 200 sieve, the maximum unit weight was 108.54 pounds per cubic feet, and a moisture content of 17.05%, 3.6 dry optimum. The embankment was constructed using a pneumatic tamper to 102.1% compaction at optimum with approximately 1-inch lifts over a three-week period. The average void ratio was 0.57 and the average degree of saturation was 81.62. The embankment was 10 feet long (upstream to downstream), 1.5 feet wide, and 3 feet tall. The embankment was built using a stair step construction. The steps were removed prior to the test. The surface was not scarified prior to testing. The test crack was a 3/8-inch continuous crack both vertically and horizontally. Speed tests were conducted throughout the experiment. This video file contains an audio description.