Relationship of Apparent Electrical Resistivity Measured by Four-Probe Method with Water Content Distribution in Concrete

Minagawa, Hiroshi; Miyamoto, Shintaro; Hisada, Makoto

doi:10.3151/jact.15.278

Cited by 21 publications

(8 citation statements)

References 10 publications

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“…The four-probe method is usually used to measure the surface resistances of cylindrical or prismatic specimens [4,5,15,19]. In this method, as shown in Fig.…”

Section: Four-probe or Wenner Probe Methodsmentioning

confidence: 99%

“…In the four-point method, a four-probe device is placed on the surface of the concrete specimen, a voltage difference is applied between the two medium probes and the amount of current between the two external probes is measured and the resistance (R) is obtained by using the Ohm law. The resistivity of the specimen is obtained by multiplication of coefficient 2 a [15,16,19]. Here, a is the distance between the probes.…”

Section: Introductionmentioning

confidence: 99%

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The relationship between resistances measured by two-probe, Wenner probe and C1760-12 ASTM methods in electrically conductive concretes

Dehghanpour

Yılmaz

2019

SN Appl. Sci.

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In recent years, the investigation of electrically conductive concrete between construction building materials has been one of the interesting subjects. Therefore, it is important to examine and compare electrical resistance measurement methods. In previous studies, the resistance of electrically conductive concretes was measured by different methods. In this study, it is aimed to measure the resistivity value by three different methods and compare them with each other. For this purpose, two-phase electrical conductive concretes with eight different mixes and additional control concrete were produced. Two different proportions of carbon fiber and four different ratios of recycled nanocarbon black were used in the mixtures. The electrical resistivity of the produced cylindrical specimens was measured by two-probe, Wenner probe and C1760-12 ASTM methods. According to the regression coefficients obtained in the results, the linear relationships between the resistivity values measured with all three methods were found to be appropriate. In addition, the nanocarbon black additive used significantly increased the conductivity of carbon fiber. Nanocarbon black and carbon fiber have also been useful in improving the compressive strength of electrically conductive concretes.

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“…The four-probe method is usually used to measure the surface resistances of cylindrical or prismatic specimens [4,5,15,19]. In this method, as shown in Fig.…”

Section: Four-probe or Wenner Probe Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The relationship between resistances measured by two-probe, Wenner probe and C1760-12 ASTM methods in electrically conductive concretes

Dehghanpour

Yılmaz

2019

SN Appl. Sci.

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“…The effect of temperature was studied by Coyle et al (2016) who reported that ρ is reduced by factor of 3 when the temperature increases from 5 to 30°C. The strong effect of moisture and moisture gradients on ρ was thoroughly investigated by Minagawa et al (2017), whilst the role of reinforcement on ρ was dealt with by Angst and Elsener (2014) and by Salehi et al (2016). Improving the conditions for site measurement of the electrical resistivity ρ as, for instance, by trying to saturate the concrete surface, is far from easy Presuel-Moreno et al (2010).…”

Section: Relation In Situ Tests Vs Strengthmentioning

confidence: 99%

<i>In Situ</i> Durability Characteristics of New and Old Concrete Structures

Frenzer¹,

Jacobs

Torrent³

2021

ACT

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This paper analyzes field experimental data obtained on about 30 concrete structures, both new (age up to 1 year) and old (age up to 60 years). The data include in situ non-destructive tests (NDT) of air-permeability kT, electrical resistivity ρ and surface moisture m, as well as tests conducted on drilled cores: O 2 -permeability kO, water sorptivity a 24 , MIP, carbonation rate K c and chloride content Cl at 10 to 20 mm depth. The main conclusions are that in situ kT of new structures is a good indicator of both kO and a 24 . Regarding old structures, high values of kT and kO are accompanied by low a 24 values and by tight MIP pore structure. This phenomenon is attributed to microcracks, with strong effect on permeation but not so much on capillary suction. Similarly, high values of kT are not always accompanied by deep carbonation depths. The chloride content did not show correlation with either kT or ρ. In situ measurements of ρ, under the testing conditions, did not correlate with any other durability test. Finally, the spread of kT values for old structures is significantly wider than for young structures, suggesting that age improves durable concrete but weathering and damage impair non-durable concrete.

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“…Nevertheless, the four-probe method is the most common method used in large-scale soil electivity surveys due to its high accuracy [20]. It should be noted that the apparent resistivity measurement by the four-probe method was based on the assumption that object medium was homogeneous [30].…”

Section: In Situ Detection Of Clogging In a Lab-scale Hssf Cwmentioning

confidence: 99%

Quantitative Detection of Clogging in Horizontal Subsurface Flow Constructed Wetland Using the Resistivity Method

Liu

Song

et al. 2018

Water

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Substrate clogging seriously affects the lifetime and treatment performance of subsurface flow constructed wetlands (SSF CWs), and the quantitative detection of clogging is the key challenge in the management of substrate clogging. This paper explores the feasibility of the resistivity method to detect the clogging degree of an SSF CW. The clogged substrate was found to have a high water-holding capacity, which led to low apparent resistivity in the draining phase. On the basis of the resistivity characteristics, clogging quantification was performed with a standard laboratory procedure, i.e., the Wenner method used in a Miller Soil Box. The apparent resistivity to sediment fraction (v/v) (ARSF) model was established to evaluate the degree of clogging from the apparent resistivity. The results showed that the ARSF model fit well with the actual values (linear slope = 0.986; R-squared = 0.98). The methods for in situ resistivity detection were applied in a lab-scale horizontal subsurface flow constructed wetland (HSSF CW). Combined with the ARSF model, the two-probe method demonstrated high accuracy for clogging quantification (relative error less than 9%). These results suggest that the resistivity method is a reliable and feasible technique for in situ detection of clogging in SSF CWs.

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Relationship of Apparent Electrical Resistivity Measured by Four-Probe Method with Water Content Distribution in Concrete

Cited by 21 publications

References 10 publications

The relationship between resistances measured by two-probe, Wenner probe and C1760-12 ASTM methods in electrically conductive concretes

The relationship between resistances measured by two-probe, Wenner probe and C1760-12 ASTM methods in electrically conductive concretes

<i>In Situ</i> Durability Characteristics of New and Old Concrete Structures

Quantitative Detection of Clogging in Horizontal Subsurface Flow Constructed Wetland Using the Resistivity Method

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