Design and evaluation of high-volume fly ash (HVFA) concrete mixes, report B : bond behavior of mild reinforcing steel in HVFA concrete.

Details

• Corporate Creators:
  Missouri University of Science and Technology
• Subject/TRT Terms:
  • Concrete construction
  • Portland cement
  • Fly ash
  • Mix design
  • Reinforced concrete
  • Recycled materials
  • Economic impacts
  • Cement additives
  • Performance tests
  • Bond strength (Materials)
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• Publication/ Report Number:
  TRyy1110
• Resource Type:
  Tech Report
• Geographical Coverage:
  Missouri
• Corporate Publisher:
  Missouri. Department of Transportation
• Abstract:
  The main objective of this study was to determine the effect on bond performance ; of high-volume fly ash (HVFA) concrete. The HVFA concrete test program consisted of ; comparing the bond performance of two concrete mix designs with 70% cement ; replacement with Class C fly ash relative to a Missouri Department of Transportation ; (MoDOT) standard mix design. ; Two test methods were used for bond strength comparisons. The first was a direct ; pull-out test based on the RILEM 7-II-128 “RC6: Bond test for reinforcing steel. 1. Pullout ; test” (RILEM, 1994). The direct pull-out tests were performed on specimens with #4 ; (#13) and #6 (#19) deformed reinforcing bars. ; The second test method consisted of a full-scale beam splice test specimen ; subjected to a four-point loading until failure of the splice. This test method is a non- ; ASTM test procedure that is generally accepted as the most realistic test method for both ; development and splice length. The beam splice tests were performed on beams with #6 ; (#19) reinforcing bars spliced at midspan at a specific length to ensure bond failure ; occurred prior to shear or flexural failure. ; Analysis of the HVFA concrete test data indicates that using greater than 50% ; replacement of cement with fly ash in concrete does not result in any increase in the ; required development length of mild reinforcing steel.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/25527/dot_25527_DS1.pdf
• File Type:
  [PDF - 10.50 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:233120f4f7f5f5a1f282fc9ee1c0ff3e2377ce271886bc52921933f3163d869a982fedf514f6915fbda1110a27f85d6268bb69cddf0ae43da951d3c0e12aae05