Influence of temperature and humidity on Portland cement mortar resistivity monitored with inner sensors

Zaccardi, Yury Villagrán; Garcia, J.; Huélamo, P.; Maio, Ángel Antonio Di

doi:10.1002/maco.200805075

Cited by 44 publications

(26 citation statements)

References 24 publications

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“…Electrical current generally flows through the ions dissolved in the pore solution and can be affected by temperature which causes changing the ion (Na + , K + , Ca 2+ , SO 4 2− , and OH − ) mobility and ion-ion and ion-solid interactions, as well as the ion concentration in porous media [7,87,88]. It was reported that the effect of temperature on bulk pore solution resistivity was noticeably different from that of cement paste or mortar with the same ion concentration, which was most likely because of strong ion-solid interactions in cement paste or mortar and less internal ionic frictions [17].…”

Section: Effect Of Temperaturementioning

confidence: 99%

“…For simplicity, a change of 3% to 5% on resistivity measurements per ∘ C has been recommended for temperature range of 0 ∘ C to 40 ∘ C [7,67]. A linear relationship has been developed on temperature dependency of resistivity [45,88,91]:…”

Section: Effect Of Temperaturementioning

confidence: 99%

“…It was found that the above equation is only applicable over a limited interval of ±5 ∘ C to the reference temperature [45,88,91]. A model developed in DuraCrete [92] also describes the correlation between at temperature ( ∘ C) and resistivity 20 at 20 ∘ C:…”

Section: Effect Of Temperaturementioning

confidence: 99%

See 2 more Smart Citations

Electrical Resistivity of Concrete for Durability Evaluation: A Review

Azarsa

Gupta

2017

Advances in Materials Science and Engineering

240

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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: Effect Of Temperaturementioning

confidence: 99%

Section: Effect Of Temperaturementioning

confidence: 99%

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Electrical Resistivity of Concrete for Durability Evaluation: A Review

Azarsa

Gupta

2017

Advances in Materials Science and Engineering

240

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“…Wang et al ( , 2015 observed the electrical resistivity change in response to temperature and the change of ice nucleation temperature during FTCs. However, current studies only focused on the effect of either moisture content or temperature on the electrical conductivity of concrete (Villagrán Zaccardi et al 2009). The combined effect of moisture content and temperature on electrical conductivity should be clarified firstly if one wants to monitor the ice formation process reliably based on the electrical measurements.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Ice Content in Mortar Based on Electrical Measurements under Freeze-Thaw Cycle

Wang

Gong

Zhang

et al. 2016

ACT

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Ice content is an essential factor that affects the internal pressure of cement-based materials during freeze-thaw cycles (FTCs). Since the electrical conductivity of mortar is closely related to its moisture content, it is possible to estimate the ice content based on electrical conductivity variation of mortar. As a result, the ice formation process during FTCs can be monitored. This paper proposed a model to estimate the ice content by applying electrical measurements and clarified the combined effects of temperature and moisture content for electrical conductivity of mortar. The ice content of mortar was estimated with the model by conducting the electrical test. The results are found in acceptable agreement with theoretical results from thermodynamic analysis, and the relationship between ice content and temperature is similar to existing calorimetric test results, which confirm the reliability of the model and the proposed test method.

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“…The electrical resistivity is plotted as a function of temperature change as shown in Figure 5.5 for samples with different degrees of saturation. As the temperature decreases, an increase in resistivity can be seen due to the temperature effect on electrical resistivity of mortar samples (Nokken et al, 2008;Sant et al, 2008;Spragg, Villani, et al, 2013;Villagrá n Zaccardi et al, 2009). As shown in Figure 5.5, a change in the slope of resistivity-temperature curve can be seen as the phase change (i.e., ice formation or ice melting) occurred.…”

Section: Electrical Responsementioning

confidence: 93%

Early Detection of Joint Distress in Portland Cement Concrete Pavements

Harris¹,

Farnam²,

Spragg³

et al. 2015

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The Joint Transportation Research Program serves as a vehicle for INDOT collaboration with higher education institutions and industry in Indiana to facilitate innovation that results in continuous improvement in the planning, design, construction, operation, management and economic efficiency of the Indiana transportation infrastructure. https://engineering.purdue.edu/JTRP/index_html AbstractINDOT (as well as several surrounding states) have observed that certain concrete pavements may show a susceptibility to joint deterioration. Unfortunately, by the time that this joint deterioration is observed it is often too late and costly partial depth repairs are needed. The deterioration is generally occurring in the joint behind the backer rod and joint sealant; as such, it is difficult to detect even if one is standing directly above the joint. This project investigated the use of electrical resistivity and ground penetrating radar as two techniques to detect premature joint deterioration. The thought process was that if the joint deterioration is determined at an early stage, low cost corrective actions can be taken to extend the life of the concrete. The electrical response was measured for mortars subjected to a temperature cycle from 23 °C to -35 °C, with varying degrees of saturation, and varying salt concentrations. The resistivity increased as the degree of saturation was reduced due to the reduction in the volume of the conductive medium and increase in tortuosity. Changes in resistivity were detected when cracking occurred in the sample. The magnitude of these changes was similar to that detected using changes in the ultrasonic wave speed. Ground penetrating radar (GPR) was used effectively to detect fluid accumulation in the saw-cut joint behind the joint sealant. The typical GPR waveforms are however difficult and time consuming to interpret. A signal processing approach called, referred to as the CID, was used to obtain a single number that reflects the potential for fluid in the joint. Scalar waveform features and the computed CID can be used to estimate which joints may contain fluid thereby providing insights into which joint sealant sections may need to be repaired or when a sufficient number of joints may contain fluid suggesting a larger joint maintenance effort be performed to seal the joints or the concrete.17.

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Influence of temperature and humidity on Portland cement mortar resistivity monitored with inner sensors

Cited by 44 publications

References 24 publications

Electrical Resistivity of Concrete for Durability Evaluation: A Review

Electrical Resistivity of Concrete for Durability Evaluation: A Review

Estimation of Ice Content in Mortar Based on Electrical Measurements under Freeze-Thaw Cycle

Early Detection of Joint Distress in Portland Cement Concrete Pavements

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