Development of Standard Methodology to Measure Sulfate Ions in Post-Tensioned Grouts

The objectives of this study are to: (1) Identify the extent that vestigial sulfur-bearing cement or grout constituents contribute to sulfate ion levels in hardened and deficient grout pore water. (2) Identify sulfate ion transport mechanisms in grouts in tendons with vertical deviation. (3) Identify if sulfate content in raw grout materials or from laboratory bleed water tests can be used to characterize corrosion sulfate limits. (4) Identify the effects of grout sampling methodologies on hardened and deficient PT grout for total and water soluble sulfate levels.

Language

• English

Project

• Status: Active
• Funding: $199056
• Contract Numbers:

  BDV29 977-43

• Sponsor Organizations:

  Florida Department of Transportation

  Research Center
  605 Suwannee Street MS-30
  Tallahassee, FL  United States  32399-0450
• Project Managers:

  Lasa, Ivan

• Performing Organizations:

  Florida International University

  Division of Research
  11200 SW 8th St, MARC 430
  Miami, FL  United States  33199
• Principal Investigators:

  Lau, Kingsley

• Start Date: 20180301
• Expected Completion Date: 20210731
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Corrosion; Grout; Methodology; Posttensioning; Sulfates; Tendons (Materials)
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 01661893
• Record Type: Research project
• Source Agency: Florida Department of Transportation
• Contract Numbers: BDV29 977-43
• Files: RIP, STATEDOT
• Created Date: Mar 6 2018 3:37PM