U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Washing bridges to reduce chloride : interim report.

File Language:
English


Details

  • Alternative Title:
    Washing bridges to reduce chloride.
  • Creators:
    Soltesz, Steven
  • Corporate Creators:
    Oregon. Dept. of Transportation. Research Unit
  • Corporate Contributors:
    United States. Federal Highway Administration
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA-OR-DF-04-05
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Oregon
  • Corporate Publisher:
    Oregon. Dept. of Transportation. Research Unit
  • Abstract:
    Chloride ions are known to promote the corrosion of steel in reinforced concrete. This project was undertaken to investigate the efficacy of washing, to reduce chloride content and chloride ion uptake. The project consists of a laboratory and a field component over a period of four years.

    In the field component test sections of a coastal bridge have been pressure washed on a once per year and twice per year schedule. A set of washing trials is also being conducted on concrete blocks exposed to salt water in the laboratory, to determine whether chloride ions can be removed from the concrete and whether the ingress of chloride ions can be reduced. After two years, the effect of washing on removing chloride ions was inconclusive, but washing did reduce the uptake of chloride ions by up to 89%. Chloride levels decreased with a washing cycle of once per day, but no change was observed with washing cycles of once per week or once per month.

    Based on these results, field testing on the bridge was discontinued. The laboratory washing will continue for another two years.

  • Format:
    PDF
  • Funding:
    SPR 304-031
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:91f9150a048c758b86cd7e7697dba05db1694cb785c1abde6c9f4067f2d77f0f5a61f023592bea1fc407885c1d7d6c21654754e00fdb77fb5aa896a6b58cb861
  • Download URL:
  • File Type:
    Filetype[PDF - 550.78 KB ]
PREVIOUS
File Language:
English
ON THIS PAGE
Details
 Found an issue?
Send us an email at:
publishinghd@cdc.gov
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP