Quantitative Characterization of Transport Properties in Roller-Compacted Concrete by Incorporating RCPT and TDR.
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| Title: | Quantitative Characterization of Transport Properties in Roller-Compacted Concrete by Incorporating RCPT and TDR. |
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| Authors: | Issa, Issa M.1 (AUTHOR) issamissa021@gmail.com, Zollinger, Dan G.2 (AUTHOR) d-zollinger@tamu.edu, Lytton, Robert L.2 (AUTHOR) r-lytton@civil.tamu.edu, Cunningham, Thomas3 (AUTHOR) tcunningham0220@tamu.edu |
| Source: | Journal of Materials in Civil Engineering. Jan2023, Vol. 35 Issue 1, p1-9. 9p. |
| Subjects: | Roller compacted concrete, Diffusion coefficients, Permittivity, Refractive index, Ideal sources (Electric circuits) |
| Abstract: | This paper proposes a reconfiguration of the rapid chloride permeability test (RCPT) using a time-domain reflectometer (TDR) to quantify the transport properties of concrete. The current RCPT test requires soaking the specimens for 18±2 h to facilitate the ionic movement during the test. A voltage source is constantly applied over a 6-h period, and the charge passed is measured to qualitatively interpret the penetrability of concrete specimens. In this study, oven-dry specimens were used to measure the time-dependent dielectric constant as a key output of the TDR measurements and characterize the actual ingress of the chloride solution over the 6-h test period. The measured dielectric constant was used in the self-consistent and complex refractive index (CRI) models to establish the volumetric solution content relationship with time. Furthermore, this relationship was employed to estimate the transport properties in terms of diffusion and permeability coefficients of roller-compacted concrete (RCC) specimens. It was also used to establish a relationship between the charge passed and the volumetric content of the solution. Test results showed that the diffusion coefficients of RCC specimens are in order of 10−8 m2/s , and permeability coefficients are in the order of 10−6 m2/s. Additionally, the charge passed exhibited a linear relationship with the volumetric content of the solution. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Materials in Civil Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 160229779 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Quantitative Characterization of Transport Properties in Roller-Compacted Concrete by Incorporating RCPT and TDR. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Issa%2C+Issa+M%2E%22">Issa, Issa M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> issamissa021@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Zollinger%2C+Dan+G%2E%22">Zollinger, Dan G.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> d-zollinger@tamu.edu</i><br /><searchLink fieldCode="AR" term="%22Lytton%2C+Robert+L%2E%22">Lytton, Robert L.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> r-lytton@civil.tamu.edu</i><br /><searchLink fieldCode="AR" term="%22Cunningham%2C+Thomas%22">Cunningham, Thomas</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> tcunningham0220@tamu.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+in+Civil+Engineering%22">Journal of Materials in Civil Engineering</searchLink>. Jan2023, Vol. 35 Issue 1, p1-9. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Roller+compacted+concrete%22">Roller compacted concrete</searchLink><br /><searchLink fieldCode="DE" term="%22Diffusion+coefficients%22">Diffusion coefficients</searchLink><br /><searchLink fieldCode="DE" term="%22Permittivity%22">Permittivity</searchLink><br /><searchLink fieldCode="DE" term="%22Refractive+index%22">Refractive index</searchLink><br /><searchLink fieldCode="DE" term="%22Ideal+sources+%28Electric+circuits%29%22">Ideal sources (Electric circuits)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper proposes a reconfiguration of the rapid chloride permeability test (RCPT) using a time-domain reflectometer (TDR) to quantify the transport properties of concrete. The current RCPT test requires soaking the specimens for 18±2 h to facilitate the ionic movement during the test. A voltage source is constantly applied over a 6-h period, and the charge passed is measured to qualitatively interpret the penetrability of concrete specimens. In this study, oven-dry specimens were used to measure the time-dependent dielectric constant as a key output of the TDR measurements and characterize the actual ingress of the chloride solution over the 6-h test period. The measured dielectric constant was used in the self-consistent and complex refractive index (CRI) models to establish the volumetric solution content relationship with time. Furthermore, this relationship was employed to estimate the transport properties in terms of diffusion and permeability coefficients of roller-compacted concrete (RCC) specimens. It was also used to establish a relationship between the charge passed and the volumetric content of the solution. Test results showed that the diffusion coefficients of RCC specimens are in order of 10−8 m2/s , and permeability coefficients are in the order of 10−6 m2/s. Additionally, the charge passed exhibited a linear relationship with the volumetric content of the solution. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Materials in Civil Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1061/(ASCE)MT.1943-5533.0004543 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 1 Subjects: – SubjectFull: Roller compacted concrete Type: general – SubjectFull: Diffusion coefficients Type: general – SubjectFull: Permittivity Type: general – SubjectFull: Refractive index Type: general – SubjectFull: Ideal sources (Electric circuits) Type: general Titles: – TitleFull: Quantitative Characterization of Transport Properties in Roller-Compacted Concrete by Incorporating RCPT and TDR. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Issa, Issa M. – PersonEntity: Name: NameFull: Zollinger, Dan G. – PersonEntity: Name: NameFull: Lytton, Robert L. – PersonEntity: Name: NameFull: Cunningham, Thomas IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: Jan2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 08991561 Numbering: – Type: volume Value: 35 – Type: issue Value: 1 Titles: – TitleFull: Journal of Materials in Civil Engineering Type: main |
| ResultId | 1 |
