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Experiments and modeling on resistivity of multi-layer concrete with and without embedded rebar

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Date Issued:
2008
Summary:
Factors such as water to cement ratio, moisture, mixture, presence and depth of rebar, and dimension of specimens, all of which affect apparent resistivity of concrete, were analyzed by experimental and modeling methods. Cylinder and rectangular prism concrete specimens were used in the experiments exposed in a high moisture room, laboratory room temperature, high humidity and outdoor weather environments. Single rebar and four rebar specimens were used to study the rebar effect on the apparent resistivity. Modeling analysis was employed to verify and explain the experimental results. Based on the results, concrete with fly ash showed higher resistivity than concrete with just ordinary Portland cement. Rebar presence had a significant effect on the measured apparent resistivity at some of the locations. The results could be used as a guide for field apparent resistivity measurements and provide a quick, more precise and easy way to estimate the concrete quality.
Title: Experiments and modeling on resistivity of multi-layer concrete with and without embedded rebar.
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Name(s): Liu, Yanbo.
College of Engineering and Computer Science
Department of Ocean and Mechanical Engineering
Type of Resource: text
Genre: Electronic Thesis Or Dissertation
Date Issued: 2008
Publisher: Florida Atlantic University
Physical Form: electronic
Extent: xiii, 91p. : ill. (some col.).
Language(s): English
Summary: Factors such as water to cement ratio, moisture, mixture, presence and depth of rebar, and dimension of specimens, all of which affect apparent resistivity of concrete, were analyzed by experimental and modeling methods. Cylinder and rectangular prism concrete specimens were used in the experiments exposed in a high moisture room, laboratory room temperature, high humidity and outdoor weather environments. Single rebar and four rebar specimens were used to study the rebar effect on the apparent resistivity. Modeling analysis was employed to verify and explain the experimental results. Based on the results, concrete with fly ash showed higher resistivity than concrete with just ordinary Portland cement. Rebar presence had a significant effect on the measured apparent resistivity at some of the locations. The results could be used as a guide for field apparent resistivity measurements and provide a quick, more precise and easy way to estimate the concrete quality.
Identifier: 316795801 (oclc), 166452 (digitool), FADT166452 (IID), fau:2835 (fedora)
Note(s): by Yanbo Liu.
Thesis (M.S.C.S.)--Florida Atlantic University, 2008.
Includes bibliography.
Electronic reproduction. Boca Raton, Fla., 2008. Mode of access: World Wide Web.
Subject(s): Reinforced concrete -- Corrosion -- Testing
Reinforcing bars -- Properties
Concrete -- Quality control
Persistent Link to This Record: http://purl.flvc.org/FAU/166452
Use and Reproduction: http://rightsstatements.org/vocab/InC/1.0/
Host Institution: FAU