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Investigation of erosion rates of field samples using FDOT's enhanced sediment erosion rate flume (SERF).

File Language:
English


Details

  • Creators:
    Crowley, Raphael ; Bloomquist, David ; Sheppard, D. Max
  • Corporate Creators:
    University of Florida. Dept. of Civil and Coastal Engineering
  • Subject/TRT Terms:
  • Publication/ Report Number:
    BDK75 977-53
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Florida
  • Corporate Publisher:
    Florida. Dept. of Transportation
  • Abstract:
    The first part of this project was to enhance and improve the Florida Department of Transportation’s ; Sediment Erosion Rate Flume (SERF) device. Notable improvements include a pump repair, laser ; system enhancement, installation of a digital video camera, an updated graphical user interface, a ; rebuilt pump drive, and a large-capacity filter. Additionally, attempts were made to install a sand ; injection system in the SERF, although these efforts proved unsuccessful. A computational model of ; the SERF was prepared using CD-adapco’s Star-CCM+. Results appeared to indicate that a ; conservative, smooth-wall approximation must be used to estimate shear stress when testing ; sediment samples in the SERF. Using these new shear stress approximation guidelines, a series of ; erosion tests was conducted on several sediment specimens. Results appeared to show that field ; specimens exhibit layering during testing. Three distinct layering events were observed and ; described. Results also appear to show that in addition to depth-layering, erosion functions may be ; governed by spatial variability. Future sampling guidelines were developed based upon these ; results. Finally, a dataset from the Rotating Erosion Testing Apparatus (RETA) was re-analyzed. ; Results appear to show a preliminary correlation between erosion rate and rock cohesion. Lastly, a ; new operating manual was written for the SERF device.
  • Format:
    PDF
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/26917/dot_26917_DS1.pdf
  • File Type:
    Filetype[PDF - 6.12 MB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha256:ce7652bdead6c24c82a6339742dc4104d1a77f3d3498987387e2c7cad09558f9
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