Chloride Diffusivity and Resistivity of Cured and Mature Binary/Ternary Concrete [Summary]

Details

• Creators:
  Presuel-Moreno, Francisco J
• Corporate Creators:
  Florida. Dept. of Transportation. Research Center
• Subject/TRT Terms:
  • Absorption
  • Admixtures
  • Chlorides
  • Concrete
  • Corrosion
  • Diffusivity
  • Durability
  • Reinforced concrete bridges
  • Service life
  • Chloride Diffusivity and Resistivity of Cured and
  More +
• Resource Type:
  Brief
• Geographical Coverage:
  Florida ; United States
• Contracting Officer:
  Ron Simmons
• Corporate Publisher:
  Florida. Dept. of Transportation. Research Center
• Abstract:
  Concrete structures in marine environments are constantly exposed to salt. Over years, the chloride ions in salt can migrate through concrete and cause the steel that reinforces the concrete to corrode, causing cracks that let in more chloride ions, further weakening the structure. Understanding how fast chloride ions migrate through concrete is important for finding the most chloride-resistant concrete blends and for estimating the service life of steel-reinforced concrete structures. The migration of ions through concrete is slow, and it can take years for enough chloride ions to build up near the steel to initiate damage. However, during those years, for some compositions, the migration rate decreases, thus possibly extending the time until corrosion begins. Further complicating the situation are additives, such as fly ash or slag, that can change the diffusion rate of chloride ions.
• Format:
  PDF
• Funding:
  BDV27-977-09
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/42284/dot_42284_DS1.pdf
• File Type:
  [PDF - 122.07 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:a21b473b9917e59ec275be540e4764e64a89e3f999b29ed42f5d8e791fa9ccc6