Corrosion-Free Precast Prestressed Concrete Piles Made with Stainless Steel Reinforcement: Construction, Test and Evaluation

The use of duplex high-strength stainless steel (HSSS) grade 2205 prestressing strand and austenitic stainless steel (SS) grade 304 spiral wire reinforcement is proposed as a replacement of conventional prestressing steel, in order to provide a 100+ year service life for prestressed concrete piles located in the Georgia coastal region. The study experimentally investigated 16-in. square, 70-ft. long piles constructed using duplex HSSS 2205 strands and SS 304 spiral wire reinforcement and compared their behavior with identical piles which were built using the conventional strands and spirals. The piles were successfully driven to refusal without visible damage, were extracted and tested in flexure and shear. Transfer and development length of piles using duplex HSSS 2205 strands were 57% and 55%, respectively, of the values predicted by American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) (2013). Transfer length of duplex HSSS 2205 strands was not affected by pile driving and extraction. Flexural and shear strength of piles using duplex HSSS 2205 strands were greater than predicted by American Concrete Institute (ACI) 318-11 and AASHTO LRFD (2013) specifications. Experimental prestress losses at 335 days for piles using duplex HSSS 2205 strands were 82% of the predicted losses by AASHTO LRFD refined method. Prestress losses were not affected by pile driving and extraction. It was concluded that duplex HSSS 2205 can be used for prestressing strands in combination with austenitic SS 304 for the transverse confinement and shear reinforcement for prestressed concrete piles, using the same design requirements and construction procedures used for conventional prestressing strand and wire reinforcement.

  • Record URL:
  • Corporate Authors:

    Georgia Institute of Technology, Atlanta

    School of Civil and Environmental Engineering
    Atlanta, GA  United States  30332

    Georgia Department of Transportation

    Office of Research, 15 Kennedy Drive
    Forest Park, GA  United States  30297-2534

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Paul, Alvaro
    • Kahn, Lawrence F
    • Kurtis, Kimberly
  • Publication Date: 2015-3

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 306p

Subject/Index Terms

Filing Info

  • Accession Number: 01567398
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-GA-15-1134
  • Contract Numbers: 0010820 (RP 11-34)
  • Files: TRIS, ATRI, USDOT, STATEDOT
  • Created Date: Jun 17 2015 8:06AM