PROTOCOL FOR SELECTING ALKALI-SILICA REACTION (ASR)-AFFECTED STRUCTURES FOR LITHIUM TREATMENT

This document describes a protocol for evaluating damaged structures to determine whether they are suitable candidates for lithium treatment to address alkali-silica reaction (ASR). A major part of this report deals with the approach/tools that can be used to determine whether ASR is the principal cause or only a contributing factor to the observed deterioration (diagnosis), determine the extent of deterioration due to ASR in the structure, and evaluate the potential for future expansion due to ASR (prognosis). Finally, the report lists items to be included in the proposal that will be submitted for the selection of structures for lithium treatment. Guidelines on evaluating and managing structures affected by ASR have been published by the Canadian Standards Association (CSA). Pictures of field symptoms and petrographic features of ASR can be found in the documents from CSA, the British Cement Association, the American Concrete Institute, Stark, and Farny and Kosmatka. More recently, Folliard and Kurtis summarized such features as part of the Federal Highway Administration workshop material "Guidelines for the Use of Lithium to Mitigate or Prevent ASR in Concrete."

• Record URL:
  http://www.fhwa.dot.gov/publications/research/infrastructure/pavements/pccp/04113/04113.pdf
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/40134
• Corporate Authors:

  Transtec Group, Incorporated

  6111 Balcones Drive
  Austin, TX  United States  78731

  Federal Highway Administration

  Turner-Fairbank Highway Research Center, 6300 Georgetown Pike
  McLean, VA  United States  22101
• Authors:
  • Thomas, MDA
  • Fournier, Benoit
  • Folliard, K J
• Publication Date: 2004-8

Language

• English

Media Info

• Media Type: Digital/other
• Features: References; Tables;
• Pagination: 23 p.

Subject/Index Terms

• TRT Terms: Alkali silica reactions; Concrete structures; Deterioration; Evaluation and assessment; Guidelines; Lithium
• Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete;

Filing Info

• Accession Number: 00978467
• Record Type: Publication
• Report/Paper Numbers: FHWA-HRT-04-113
• Contract Numbers: DTFH61-02-C-00051
• Files: NTL, TRIS, USDOT
• Created Date: Sep 15 2004 12:00AM