Sampling and testing for chloride ion in concrete

Details

• Creators:
  Clear, Kenneth C. ; Harrigan, Edward T.
• Corporate Creators:
  United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
• Subject/TRT Terms:
  • Chlorine content
  • Corrosion
  • Bridge decks
  • Structures
  • Chemical tests
  • Bridges, Concrete - Floors
  • Bridges, Concrete - Design and construction
  • Concrete - Deterioration
  • Chlorides
• Publication/ Report Number:
  FHWA-RD-77-85
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Interim report
• Corporate Publisher:
  United States. Department of Transportation. Federal Highway Administration. Offices of Research and Development
• Description:
  One of the most severe problems facing the highway community is chloride ion-induced reinforcing steel corrosion and the subsequent deterioration of concrete bridge decks and marine structures. This report presents recommended methods for sampling and testing for both total and water-soluble chloride ion in hardened concrete. The methods are updated and expanded revisions of the earlier procedure developed by FHWA and contained in report FHWA-RD-72-12, "Determination of Chloride in Hardened Portland Cement Paste, Mortar and Concrete" by H. A. Berman and report FHWA-RD-74-5, "Evaluation of Portland Cement Concrete for Permanent Bridge Deck Repair." Alternate procedures for sampling the hardened concrete with either a core drill or a rotary impact drill are included. In addition, two alternate methods of chemical analysis are presented, the original potentiometric titration method and a significantly more rapid method employing the Gran endpoint determination procedure. Both are compatible with either chloride or silver ion-selective electrodes.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16463/dot_16463_DS1.pdf
• File Type:
  [PDF - 11.65 MB]
• Collection(s):
  US Transportation Collection ; Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:50f4d8f7575874dc258e3c946df557f0ae7ebfcb7cfec0fb97d0c6d528f06ac15ee770f7f53f2592bf4991084ee71ca2475e953ed8247e2d108aede6b8b40622