Corrosion performance tests for reinforcing steel in concrete : technical report.

Details

• Creators:
  Trejo, David ; Halmen, Ceki ; Reinschmidt, Kenneth
• Corporate Creators:
  Texas Transportation Institute
• Corporate Contributors:
  Texas. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Corrosion
  • Reinforcing bars
  • Reinforced concrete pavements Steel bars--Corrosion
  • Reinforcing bars--Corrosion
  • Pavements, Reinforced concrete
• Publication/ Report Number:
  FHWA/TX-09/0-4825-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report; Sept. 2003-Aug. 2008
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  The existing test method used to assess the corrosion performance of reinforcing steel embedded in ; concrete, mainly ASTM G 109, is labor intensive, time consuming, slow to provide comparative results, ; and can be expensive. However, with corrosion of reinforcement a major challenge to the durability of ; infrastructure systems, improvements in the corrosion performance of materials could add significant value. ; With limited resources, new procedures and test methods are needed to assess corrosion performance of ; potentially value-adding materials. This research evaluated four accelerated test procedures (rapid ; macrocell (a.k.a. mini-macrocell), ACT test, CCIA test, and a modified ASTM G109 test) and compared ; these tests with the standard ASTM G 109 tests. The reasonableness of the test results, test simplicity, test ; cost, and test duration were all assessed. Results indicate that the rapid macrocell, ACT, and CCIA tests ; can reduce the time required to perform the tests by approximately 90 percent compared to standard ASTM ; G 109 test. Not considering the one-time equipment cost, the rapid macrocell, ACT, and CCIA decrease ; the cost by approximately 75, 58, and 67 percent compared to the standard ASTM G 109 test, respectively. ; The rapid macrocell test was determined to be relatively simple while the CCIA and ACT tests were ; considered to be more complex to perform. Based on the research findings, it is proposed that TxDOT use ; the rapid macrocell test to evaluate the corrosion performance of most materials. To evaluate the ; performance of dielectric coatings on reinforcement, it is recommended that the MG 109 test be used to ; evaluate these system types. For specific testing needs, other tests may be appropriate.
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• Format:
  PDF
• Funding:
  0-4825
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16937/dot_16937_DS1.pdf
• File Type:
  [PDF - 4.16 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:1e52061dc9dd42f34eea60b24e1b3c4ac7b3aaa9542d34246713f1312f74276d39c4c32490a9d847064937a099b0294dc68e68e31c5e386227f627e5e20cc129