Bio-Mediated Method for Improving the Erosion Resistance of Coastal Embankments

Details

• Creators:
  Zhu, Cheng ; Roksana, Kaniz
• Corporate Creators:
  Rowan University. Department of Civil and Environmental Engineering ; Aero Aggregates of North America
• Contributors:
  Loux, Theresa
• Corporate Contributors:
  Rutgers Center for Advanced Infrastructure and Transportation (CAIT) ; United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
• Subject/TRT Terms:
  Bio-mediated Technology Bonding Coastal Erosion Embankments Embankment Stability Erosion Control Ground Improvement Laboratory Tests Resistance Tests Soil Mechanics Stability (Mechanics) Technology

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• Publication/ Report Number:
  CAIT-UTC-REG71
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; New Jersey
• Edition:
  Final Report: 7/1/2022 – 3/312025
• Corporate Publisher:
  Center for Advanced Infrastructure and Transportation (CAIT) (UTC) ; Rutgers University. Center for Advanced Infrastructure and Transportation
• Abstract:
  Due to extreme weather events, coastal embankments are subjected to more frequent storm wave inundation and surge impacts, contributing to widespread coastal erosion problems. This research explored an innovative bio-mediated approach utilizing enzymatic-induced carbonate precipitation (EICP) to assess its efficacy in addressing issues related to coastal erosion. To comprehensively evaluate the outcomes of bio-cementation and its effectiveness in stabilizing coastal slopes, it is crucial to first quantify and compare various properties of EICP-treated soils, including hydraulic conductivity and strength parameters. Small-scale laboratory erosion tests were also conducted on both EICP-treated and untreated sandy slopes, with continuous monitoring of the cross-shore profile. Erosion volumes above the still water level and slope reductions beneath the water surface were calculated based on the recorded bed profiles. The findings indicate a significant reduction in sandy slope erosion under wave conditions with the application of EICP. Microstructure analysis further reveals that EICP treatment results in interlocking cementation among sand particles, substantially enhancing the sand's resistance to erosion. This research developed a bio-mediated technique to improve the physical properties of local coastal sand and showed its great potential for coastal erosion mitigation in New Jersey.
• Format:
  PDF
• Funding:
  69A3551847102
• Collection(s):
  University Transportation Centers
• Main Document Checksum:
  urn:sha-512:b2af2a522460589036a71275c2d6bc33257cfa33599f56f149c81d9da34a1e445b346398fe51188c15ee35c8092e94112934dcb779cd376df1368990a0332f21
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/87491/dot_87491_DS1.pdf
• File Type:
  [PDF - 1.32 MB ]