Novel Model to Predict the Corrosion of Mechanically Stabilized Earth Structures

Early failure of mechanically-stabilized earth (MSE) walls has been often attributed to the corrosion of galvanized steel soil reinforcements on facings. Galvanized steel is one of the most common materials used in the construction industry for its relatively compared to steels with higher corrosion resistance. A numerical model was developed to calculate the corrosion rate of galvanized steel in soil at three different stages of corrosion by considering key soil corrosion parameters such as resistivity, temperature, moisture content, pH, and oxygen availability. This paper focuses on the effect of temperatures relevant to the Canadian climate, and differential soil compaction (related to oxygen access) on the corrosion performance of MSE wall soil reinforcement and facings. Results indicate that the proposed model is suitable to be used for the service-life design and risk assessment of MSE walls and to determine the optimum zinc cover thickness. (A) For the covering abstract of this conference see ITRD record number 201310RT334E.

• Record URL:
  http://www.tac-atc.ca/english/annualconference/tac2013/session20/padilla.pdf
• Corporate Authors:

  Transportation Association of Canada (TAC)

  401-1111 Prince of Wales Drive
  Ottawa, Ontario  Canada 
• Authors:
  • PADILA, V
  • Ghods, P
  • ALFANTAZI, A
• Conference:
  • 2013 CONFERENCE AND EXHIBITION OF THE TRANSPORTATION ASSOCIATION OF CANADA - TRANSPORTATION: BETTER - FASTER - SAFER
• Publication Date: 2013

Language

• English

Media Info

• Pagination: 20 p.
• Monograph Title: 2013 Conference and Exhibition of the Transportation Association of Canada - Transportation: Better - Faster - Safer

Subject/Index Terms

• TRT Terms: Coatings; Compactibility; Conferences; Corrosion; Failure; Mechanically stabilized earth; Soil stabilization; Soils; Steel; Temperature; Zinc
• Geographic Terms: Canada
• ITRD Terms: 8018: Canada; 3612: Coating; 5904: Compaction (state of); 8525: Conference; 5252: Corrosion; 5520: Failure; 3349: Reinforced earth; 4156: Soil; 3689: Soil stabilization; 4542: Steel; 6722: Temperature; 7189: Zinc
• Subject Areas: Geotechnology; I42: Soil Mechanics;

Filing Info

• Accession Number: 01518028
• Record Type: Publication
• Source Agency: Transportation Association of Canada (TAC)
• Files: ITRD, TAC
• Created Date: Mar 11 2014 10:59AM