Rating Concrete Water Permeability Based on Resistivity Measurements
AASHTO T 277/ASTM C 1202, Electrical Indication of Concrete Ability to Resist Chloride Ion Penetration, has been widely accepted for assessing the durability of concrete. The test provides an indication of the concrete's ability to resist chloride ion penetration, but it has many shortcomings: it is slow and time consuming, destructive, and prone to errors caused by sample heating, and it fails to adequately capture features associated with supplementary cementitious materials (SCMs). Electrical resistivity measurements (AASHTO T 358, Standard Method of Test for Surface Resistivity Indication of Concrete's Ability to Resist Chloride Ion Penetration and ASTM C 1760, Standard Test Method for Bulk Electrical Conductivity of Hardened Concrete) have the potential of providing performance-based evaluation of concrete. Although the data from these methods are easy to obtain, they may not relate to concrete water permeability. It is suggested that a formation factor that incorporates the ratio of the resistivity (ñ) of the bulk concrete to the resistivity (ñ0) of the pore solution or other approaches could be used to provide a better assessment of fluid transport properties. There is a need to consider using such approaches for rating concrete permeability based on resistivity measurements and providing an expedited means for assessing concrete water permeability to facilitate the evaluation of concrete durability. The objective of this research was to develop a recommended procedure for rating concrete water permeability based on electrical resistivity measurements.
Language
- English
Project
- Status: Completed
- Funding: $600000
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Contract Numbers:
Project 18-19
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Sponsor Organizations:
National Cooperative Highway Research Program
Transportation Research Board
500 Fifth Street, NW
Washington, DC United States 20001Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590American Association of State Highway and Transportation Officials (AASHTO)
444 North Capitol Street, NW
Washington, DC United States 20001 -
Project Managers:
Hanna, Amir
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Performing Organizations:
University of Florida, Gainesville
152 Rhines Hall
P.O. Box 116400
Gainesville, FL United States 32611 -
Principal Investigators:
Ferraro, Christopher
- Start Date: 20190812
- Expected Completion Date: 20230731
- Actual Completion Date: 20230731
Subject/Index Terms
- TRT Terms: Concrete; Electrical resistivity; Methodology; Permeability
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 01669538
- Record Type: Research project
- Source Agency: Transportation Research Board
- Contract Numbers: Project 18-19
- Files: TRB, RIP, USDOT
- Created Date: May 21 2018 9:54PM