Measuring Transport Properties of Portland Cement Concrete Using Electrical Resistivity

Hartell, Julie; O’Reilly, Matthew; Zeng, Hang

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https://hdl.handle.net/2142/120052 Copy

Description

Title

Measuring Transport Properties of Portland Cement Concrete Using Electrical Resistivity

Author(s)

• Hartell, Julie
• O’Reilly, Matthew
• Zeng, Hang

Issue Date

2023-08

Keyword(s)

• Concrete
• Electrical Resistivity
• Freeze-Thaw Durability
• Corrosion Performance

Abstract

Although classification tables based on susceptibility to chloride ion permeability are recommended in AASHTO T 358, the classification levels with respect to durability parameters may or may not be adequate. Of interest for concrete pavement performance, this study verifies the recommended classification levels against standard durability testing such as corrosion, salt scaling, and freeze-thaw. The researchers conducted corrosion, salt scaling, and freeze-thaw durability tests in parallel with electrical surface resistivity testing to compare performance classifications for each method. Twenty-four mixture designs were evaluated. The designs vary in water-to-cementitious material ratio (0.4, 0.45, and 0.5 w/cm ratio), supplementary cementitious material type (100% ordinary Portland cement, 20% Class C fly ash, 40% Grade 100 slag cement, and 8% silica fume replacements), and air content (air entrained and non-air entrained). The results of the experimental study indicate that there is no clear relationship between concrete electrical conductivity and durability performance based on standard methods of testing. It may not be appropriate for the determination of durability performance of a concrete mixture for concrete pavement construction. However, the test method does present advantages, as mixtures of similar composition and design can yield the same results over time under standardized curing. Here, resistivity-time curves could be a useful tool as part of a quality control and quality assurance program to ensure consistency in concrete delivery during construction.

Publisher

Illinois Center for Transportation/Illinois Department of Transportation

Has Part

• https://doi.org/10.36501/0197-9191/23-012
• ISSN: 0197-9191

Series/Report Name or Number

FHWA-ICT-23-011

Type of Resource

text

Language

en

Sponsor(s)/Grant Number(s)

IDOT-R27-208

Copyright and License Information

No restrictions. This document is available through the National Technical Information Service, Springfield, VA 22161.

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