Interpretation of the impedance spectroscopy of cement paste via computer modelling

Olson, Rudolph; Christensen, B. J.; Coverdale, R. Tate; Ford, Steven; Moss, G. M.; Jennings, Hamlin M.; Mason, Thomas O.; Garboczi, Edward J.

doi:10.1007/bf00356052

Cited by 42 publications

(14 citation statements)

References 25 publications

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“…While several researchers have done excellent work describing changes in the electrical response that occur due to heating (Julio-Betancourt & Hooton, 2004;McCarter, Forde, Whittington, & Ravindrarajan, 1982;Whittington, McCarter, & Forde, 1981) or environmental temperature fluctuations (Nokken, Boddy, Wu, & Hooton, 2008;Sant, Rajabipour, & Weiss, 2008;Spragg, Villani, et al, 2013;Villagrán Zaccardi, Fullea García, Huélamo, & Di Maio, 2009), a relatively small number of researchers have used electrical properties to study freezing concrete (Cao & Chung, 2002). Olson et al (1995) used freezing to develop a measure of conduction through the capillary and gel pores for to better understand the structure of cement paste. Sato and Beaudoin (2003) examined the freezing behavior of a Wollastonite micro-fiber reinforced cement paste by using an AC impedance spectroscopy.…”

Section: Use Of Electrical Resistivity To Assess Freeze-thaw Damagementioning

confidence: 99%

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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Section: Use Of Electrical Resistivity To Assess Freeze-thaw Damagementioning

confidence: 99%

Early Detection of Joint Distress in Portland Cement Concrete Pavements

Harris¹,

Farnam²,

Spragg³

et al. 2015

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“…Algunos de los experimentos antes mencionados se dedicaron a estudiar las relaciones entre la microestructura porosa y el comportamiento eléctrico de pastas de cemento (7)(8)(9)(10), y otros a investigar la evolución de las propiedades eléctricas con el estado de hidratación o el grado y tipo de deterioro del material (8)(9)(10)(11)(12)(13)(14)(15)(16). Hubo quien se centró en el estudio de la hidratación de pastas de cemento mediante la espectroscopía de impedancia (18), asumiendo que la pasta de cemento es conductor eléctrico debido a su porosidad y a la conectividad presente, además, al tratarse de un material hidratado, hay una fase acuosa en el material que contiene iones móviles tales como Na + , K + y OH - (19,20) y que se puede ver acentuado por procesos de degradación externos como los ciclos hielo-deshielo.…”

Section: Introductionunclassified

“…En general, en los últimos años, esta técnica se ha utilizado en los cementos para estudiar la evolución microestructural y, en particular, la estructura de poro (2)(3)(4)(5)(6)(7)(8)(9)(10)20). Se han propuesto varios modelos de circuitos equivalentes para estimar los parámetros físicos significativos de las respuestas eléctricas en función de la estructura, distribución y tamaño de poro, junto con el grado de hidratación (21,(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25) siempre para tiempos superiores a las 24 horas, en los que la estabilidad del material permite el análisis de los arcos de impedancia.…”

Section: Introductionunclassified

Equivalencia entre medidas eléctricas y difracción de rayos X en la formación de fases cristalinas de pastas de cemento

Menéndez¹,

Frutos²

2011

Bol. Soc. Esp. Ceram. Vidr.

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En este trabajo se hace un estudio comparado de los procesos de hidratación en edades muy tempranas, 20 primeras horas, entre una pasta de cemento convencional y su equivalente con una sustitución de escorias de aproximadamente el 12 %. El estudio se realiza mediante calorimetría semiadibática, espectroscopía de impedancia y difracción de rayos X. Se pone de manifiesto que haciendo uso de la espectroscopía de impedancia se puede determinar el estado de cristalización del material con y sin adiciones, permitiendo determinar el tiempo en el que se inician los diferentes procesos de hidratación en el mismo. Palabras clave: Impedancia Eléctrica, hidratación cemento, escorias, análisis no destructivo Equivalence between electrical measurements and X ray difraction in the formation of crystalline phases of cement pasteIn this paper a comparative study of the hydration process in a very early age, first 20 hours, between a conventional cement paste and its equivalent with a replacement of slag of about 12%, is done. The study was undertaken through semiadibatic calorimetry, electrical impedance spectroscopy and X-ray diffraction. It shows that using electrical impedance spectroscopy we can determine the state of crystallization of the cement with and without additions, thereby determining the time at which the different processes are initiated in the hydration

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“…The responses in electrical signal that the ACIS monitors are of particular interest and value in understanding the micro-scale structures of cement paste under various conditions such as freezing. Olson et al (1995) applied the impedance spectroscopy technique to monitor the behavior of Portland cement paste during cooling from temperature down to -50°C. Perron and Beaudoin (2002) used the ACIS technique to investigate the cement paste subjected to the freezing at -80°C.…”

Section: Introductionmentioning

confidence: 99%

Coupled AC impedance and thermomechanical analysis of freezing phenomena in cement paste

Sato

Beaudoin

2010

Mater Struct

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1617/s11527-010-9635-3Materials and Structures, 43, pp. 1-10, 2010-10-01 Coupled AC impedance and thermo-mechanical analysis of freezing phenomena in cement paste Sato, T.; Beaudoin, J. J.

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Interpretation of the impedance spectroscopy of cement paste via computer modelling

Cited by 42 publications

References 25 publications

Early Detection of Joint Distress in Portland Cement Concrete Pavements

Early Detection of Joint Distress in Portland Cement Concrete Pavements

Equivalencia entre medidas eléctricas y difracción de rayos X en la formación de fases cristalinas de pastas de cemento

Coupled AC impedance and thermomechanical analysis of freezing phenomena in cement paste

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