Modification of four point method to measure the concrete electrical resistivity in presence of reinforcing bars

Garzón, Amanda-Stephanie; Montero, Javier Sánchez; Andrade, Carmen; Rebolledo, Nuria; Menéndez, Esperanza; Fullea, J.

doi:10.1016/j.cemconcomp.2014.07.013

Cited by 62 publications

(34 citation statements)

References 10 publications

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“…The effect of rebar presence on mortar electrical resistivity conducted by the four-point Wenner method was also investigated numerically and experimentally by Garzon et al [26] and Lim et al [27]. In Garzon et al 's experimental study, small scaled cylindrical and prismatic specimens were casted.…”

Section: Presence Of Rebarmentioning

confidence: 99%

“…Only reinforced cylindrical and prismatic specimens were included in the experimental setup without considering a reinforced slab. However, in a numerical study, a slab with embedded rebar was considered [26]. The experimental investigation lacked in using concrete mixture instead of a mortar mixture which is not exactly representative of real-world cases and may lead to more errors.…”

Section: Presence Of Rebarmentioning

confidence: 99%

“…Hence, a rebar factor was suggested to be applied to the obtained resistivity results. In addition, modified Wenner equations are recommended for various geometric parameters [26]. Only reinforced cylindrical and prismatic specimens were included in the experimental setup without considering a reinforced slab.…”

Section: Presence Of Rebarmentioning

confidence: 99%

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Electrical Resistivity of Concrete for Durability Evaluation: A Review

Azarsa

Gupta

2017

Advances in Materials Science and Engineering

226

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Degradation processes in reinforced concrete structures that affect durability are partially controlled by transport of aggressive ions through the concrete microstructure. Ions are charged and the ability of concrete to hold out against transfer of ions greatly relies on its electrical resistivity. Hence, a connection could be expected between electrical resistivity of concrete and the deterioration processes such as increase in permeability and corrosion of embedded steel. Through this paper, an extensive literature review has been done to address relationship between concrete electrical resistivity and its certain durability characteristics. These durability characteristics include chloride diffusivity and corrosion of reinforcement as these have major influence on concrete degradation process. Overall, there exists an inverse or direct proportional correlation between these parameters. Evaluated results, from measuring the concrete electrical resistivity, can also be used as a great indicator to identify early age characteristics of fresh concrete and for evaluation of its properties, determination of moisture content, connectivity of the micropores, and even condition assessment of in-service structures. This paper also reviews and assesses research concerning the influential parameters such as environmental conditions and presence of steel rebar and cracks on measuring electrical resistivity of concrete. Moreover, concrete resistivity concept, application, and its various measurement techniques are introduced.

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Section: Presence Of Rebarmentioning

confidence: 99%

Section: Presence Of Rebarmentioning

confidence: 99%

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Electrical Resistivity of Concrete for Durability Evaluation: A Review

Azarsa

Gupta

2017

Advances in Materials Science and Engineering

226

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“…The most popular are the methods of measuring the resistance of the concrete cover, including the nondestructive four-point Wenner method [32]. In recent years modifications of this method have appeared in the literature [33][34][35]. The method presented in Fig.…”

Section: Radiological Methodsmentioning

confidence: 99%

Non-destructive and semi-destructive diagnostics of concrete structures in assessment of their durability

Hoła¹,

Bień²,

Sadowski³

et al. 2015

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. This paper proposes a comprehensive classification of test methods for the diagnosis of concrete structures. The main focus is on the ranges of suitability of the particular methods and techniques for assessing the durability of structures, depending on the principal degradation mechanisms and their effects on this durability. The survey covers non-destructive testing (NDT) methods, which do not in any way breach the integrity of the tested structures, and semi-destructive testing (SDT) methods requiring material samples to be taken or any other minor breach of structural integrity. An original taxonomy of physical, chemical and biological diagnostic methods, useful in assessment of concrete structures durability, is proposed. Equipment specific for selected advanced testing methods is presented as well as exemplary test results.

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“…[19][20][21][22][23][24] The principle of this method is based on the fundamental theory regarding the relation of electrical resistance change onto the crosssection size of each conductor, in following Equation (1):…”

Section: Electrical Resistance Measuring Methods (Mer)mentioning

confidence: 99%

Corrosion determination of reinforcement using the electrical resistance method

Brodňan¹,

Koteš²,

Vaněrek³

et al. 2017

Mater. Tehnol.

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The determination of reinforcement corrosion using the electrical resistance method of embedded bars in the concrete beams in laboratory conditions is described in this paper. For comparison, the achieved data from non-destructive measurements were compared to data from subsequent destructive tests when weight losses were recorded for each of the steel bars after their exposure time. Laboratory measurements of the reinforcements were realized particularly for verification of whether the electrical resistance method could be suitable for an in-situ corrosion-evaluation process. The next part of the research was focused on the corrosion simulation of the steel reinforcement in reinforced concrete. The effect of corrosion was simulated by a nonlinear numerical analysis with the program ATENA 3D using corrosion-rate data from a laboratory test. Keywords: corrosion, steel, reinforcement, analysis, numerical modeling V~lanku je opisano dolo~anje korozije palic, vgrajenih v betonske stebre, v laboratorijskih pogojih z uporabo metode elektri~ne upornosti. Izvedena je bila primerjava podatkov iz neporu{nih meritev s podatki iz poru{itvenih testov, ko je bilo izmerjeno zmanj{anje te`e vsake palice po dolo~enem~asu. Laboratorijske meritve palic so bile izvedene predvsem za poskus,~e je metoda elektri~ne upornosti primerna za oceno korozije in situ. Drugi del raziskave je bil usmerjen v simulacijo korozije jeklenih palic v armiranem betonu. Vpliv korozije je bil simuliran z nelinearno numeri~no analizo, s programom ATENA 3D, z uporabo korozijskih podatkov iz laboratorijskega preizkusa.

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Modification of four point method to measure the concrete electrical resistivity in presence of reinforcing bars

Cited by 62 publications

References 10 publications

Electrical Resistivity of Concrete for Durability Evaluation: A Review

Electrical Resistivity of Concrete for Durability Evaluation: A Review

Non-destructive and semi-destructive diagnostics of concrete structures in assessment of their durability

Corrosion determination of reinforcement using the electrical resistance method

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