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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations

 
Fact Sheet
This techbrief is an archived publication and may contain dated technical, contact, and link information
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Publication Number:  FHWA-HRT-19-030    Date:  April 2019
Publication Number: FHWA-HRT-19-030
Date: April 2019

 

Formation Factor Demystified and Its Relationship to Durability

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FHWA Publication No.: FHWA-HRT-19-030
Jussara Tanesi, PhD., FACI, (i) Luca Montanari,(ii) and Ahmad Ardani, P.E.(iii)

 

WHAT IS ELECTRICAL RESISTIVITY AND WHY IS IT MEASURED?

Electrical resistivity is a property that indicates the material’s resistance to the passage of electrical charges at a defined temperature. Concrete is a porous material and the porosity in concrete consists of a system of nano- and microscopic pores, interconnected at different degrees. In concrete, resistivity is directly proportional to the resistivity of the pore solution, and inversely proportional to the volume and connectivity of the pores.

FHWA-HRT-19-030 PDF Cover Image

i SES Group and Associates.
ii SES Group and Associates.
iii FHWA contact: Ahmad.Ardani@dot.gov, 202–493–3422.

 

 

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