Texas Gulf Intracoastal Waterway (GIWW) Dredged Material: Beneficial Uses, Estimating Costs, Disposal Analysis Alternatives, and Separation Techniques

Details

• Creators:
  Randall, Robert ; Basilotto, John ; Cobb, David ; Graalum, Sara ; He, Qi ; Miertschin, Michael ; Edge, Billy
• Corporate Creators:
  Texas Transportation Institute ; Texas A&M University
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Transfer Section ; United States. Federal Highway Administration
• Subject/TRT Terms:
  Dredged Materials Dredging Engineering Erosion Intracoastal Waterways Turbidity Waterways
• Publication/ Report Number:
  FHWA/TX-01/1733-S
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States;Texas
• Edition:
  Project Summary September 1996- August 1998
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  A two-year project, Alternative Dredging and Disposal Methods for the Texas Gulf Intracoastal Waterway, investigates the cost and engineering of long distance pumping, beneficial uses of GIWW-dredged material for the Texas coastal zone, separation techniques for GIWW-dredged material, optimum slurry flow, and alternatives for analyzing dredged material disposal. A cost-estimating program incorporates fuel costs, dredge crew labor costs, routine maintenance and repairs, major repairs, overhead costs, depreciation, profit, mobilization and demobilization, and capital investment cost for a cutter suction dredge. The Cutter Suction Dredge Cost Estimation Program (CSDCEP) estimates the production rate and cost of dredging projects. Comparisons with actual production rate and costs show CSDCEP is accurate. An attractive beneficial use of dredged material from the GIWW is manufactured soil, which can be manufactured using dredged material, recyclable organic waste materials (sewage sludge), and bio-mass (cellulose or saw dust). Researchers estimate the manufacturing and transportation costs at $13 to $20 per cubic yard depending on the blending method, mode of transportation, and ease of excavation. Another beneficial use is thin-layer disposal, spraying dredged material on adjacent wetlands. A geotube filled with dredged material placed along the Texas GIWW could provide a beneficial use while preventing further inundation of wetlands due to erosion. Dewatering wheels and hydrocyclones have been identified as two potential separation techniques. Results from the CD-CORMIX software show that the reduced flow from smaller dredges can reduce turbidity during the dredging process.
• Format:
  PDF
• Funding:
  Project No. 0-1733
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:d1786d919480b0ea2ab14cccb59f8e5d342fd004def2ce4bceb36536fd8e578f
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/42294/dot_42294_DS1.pdf
• File Type:
  [PDF - 2.64 MB ]