Fabricating and testing low-permeability concrete for transportation structures.

Details

• Creators:
  Ozyildirim, C.
• Corporate Creators:
  United States. Federal Highway Administration ; Virginia. Dept. of Transportation
• Subject/TRT Terms:
  • Concrete structures
  • Permeability
  • Testing
  • Chlorides
  • Compressive strength
  • Concretes
  • Fly ash
  • Hydraulic cements
  • Permeability
  • Pozzolans
  More +
• Publication/ Report Number:
  VTRC 99-R6
• Resource Type:
  Tech Report
• Geographical Coverage:
  Virginia
• Edition:
  Final report. Sept. 1, 1997-May 31, 1998
• Corporate Publisher:
  Virginia Transportation Research Council (VTRC)
• Abstract:
  Many concrete structures are not providing the expected service life. Repairs are costly, cause inconvenience to motorists, and raise safety concerns. The durability of concrete depends on, among other things, the ability to resist the penetration of harmful solutions, e.g., chlorides. Recently, pozzolanic materials have been widely used to decrease the permeability of concretes. In this study, the permeability of concretes containing portland cement alone or portland cement with a pozzolan (fly ash, silica fume) or a slag was determined by either the rapid permeability test (AASHTO T 277) or the ponding test (AASHTO T 259). Concretes were tested with either test to determine the reduction in permeability with time. Results show that both tests indicate the permeability of concretes. The rapid permeability test is more convenient and relatively faster than the ponding test. Permeability decreases with time, and the addition of pozzolans or slag is very effective in decreasing permeability.
• Format:
  PDF
• Funding:
  5764-010-940
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/15600/dot_15600_DS1.pdf
• File Type:
  [PDF - 1.05 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:0c23ee503a9a50c9bf5df5b4cc65814d47686a518464f0f029eb9e9b7af57443