You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    Volume 7, Issue 1

    Comparison of Linear Temperature Corrections and Activation Energy Temperature Corrections for Electrical Resistivity Measurements of Concrete

    (Received 8 November 2017; accepted 7 February 2018)

    Published Online: 2018

    CODEN: ACEMF9

      Format Pages Price  
    PDF (1.06 MB) 14 $25   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word



    Abstract

    Electrical resistivity measurements are increasingly being used as measurements for concrete acceptance in practice. It has been shown that these measurements are sensitive to temperature. This paper examines the influence of temperature on electrical resistivity measurements in concrete. Two temperature correction approaches that are commonly used by researchers and practitioners were evaluated: a linear temperature correction approach (α) and an activation energy–based temperature correction approach (Ea-cond). These approaches were compared with each other and their predictive capabilities were assessed using measured data from various concrete mixtures. It was found that for cases of low temperature sensitivity (low values of α or Ea-cond), the predictions obtained with α and with Ea-cond were similar. However, the Ea-cond approach was found to provide more accurate corrections (lower error) than corrections using α for measurements conducted at lower temperatures and for systems with higher temperature sensitivities (high values of α or Ea-cond). For saturated concrete specimens, both the linear (α) and activation energy (Ea-cond) approaches are acceptable, whereas the use of the Ea-cond approach provides better predictive capabilities in sealed concrete specimens, especially at low temperatures. The average values for Ea-cond were found to be 29.8 kJ/mol for sealed specimens and 15.8 kJ/mol for saturated specimens, and corresponding average values of α are 3.25 %/°C and 2.00 %/°C, respectively. The values for Ea-cond for saturated specimens are closer to what is expected of a pore solution on its own.

    Author Information:

    Coyle, Alex T.
    School of Civil and Construction Engineering, Oregon State University, Corvallis, OR

    Spragg, Robert P.
    SES Group & Associates LLC at Turner-Fairbank Highway Research Center, McLean, VA

    Suraneni, Prannoy
    Department of Civil, Architectural and Environmental Engineering, University of Miami, Coral Gables, FL

    Amirkhanian, Armen N.
    Department of Civil, Construction and Environmental Engineering, University of Alabama, Tuscaloosa, AL

    Weiss, William J.
    School of Civil and Construction Engineering, Oregon State University, Corvallis, OR


    Stock #: ACEM20170135

    ISSN:2379-1357

    DOI: 10.1520/ACEM20170135

    Author
    Title Comparison of Linear Temperature Corrections and Activation Energy Temperature Corrections for Electrical Resistivity Measurements of Concrete
    Symposium ,
    Committee C09