Effect of temperature and moisture on the instantaneous behaviour of concrete.
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| Title: | Effect of temperature and moisture on the instantaneous behaviour of concrete. |
|---|---|
| Authors: | Kallel, H.1,2 hatem.kallel@univ-pau.fr, Carré, H.1 helene.carre@univ-pau.fr, La Borderie, C.1 christian.laborderie@univ-pau.fr, Masson, B.2 benoit.masson@edf.fr, Tran, N.C.3 nhu-cuong.tran@edf.fr |
| Source: | Cement & Concrete Composites. Jul2017, Vol. 80, p326-332. 7p. |
| Subjects: | Moisture in concrete, Nuclear power plants, Nuclear reactor containment, Tensile strength, Fracture mechanics |
| Abstract: | In nuclear power plants, a severe accident in the containment building results in an increase in pressure, temperature and relative humidity that can reach respectively 5 bars, 140 °C and the saturation of water vapour. As well as the regulatory calculations, accurate knowledge of the thermal and mechanical behaviour of materials and more specifically of concrete is required to carry out more precise numerical simulations. Our study aims to investigate the mechanical behaviour of concrete under homogeneous conditions of moisture and temperature. An experimental apparatus was designed in order to assess the evolutions of the fracture energy, modulus of elasticity and tensile strength of concrete. Different temperature levels up to a maximum of 90 °C and at different values of the controlled moisture content were investigated. The equipment was used to perform DCT (Disk-shape Compact Tension) tests at 30 °C and 90 °C. Five levels of degree of liquid water saturation ( S w ) were investigated for each temperature level. Finite-element computations with the code Cast3m were carried out to determine the modulus of elasticity and the tensile strength from the results of DCT tests. The fracture energy is the same at 30 and 90 °C and decreases with S w between 36 and 100%. The modulus of elasticity decreases with temperature between 30 and 90 °C, decreases with S w between 36 and 55% and increases between 72 and 100%. The tensile strength decreases with temperature between 30 and 90 °C and increases with S w between 36 and 100% [ABSTRACT FROM AUTHOR] |
| Copyright of Cement & Concrete Composites is the property of Elsevier B.V. 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: 123041899 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Effect of temperature and moisture on the instantaneous behaviour of concrete. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kallel%2C+H%2E%22">Kallel, H.</searchLink><relatesTo>1,2</relatesTo><i> hatem.kallel@univ-pau.fr</i><br /><searchLink fieldCode="AR" term="%22Carré%2C+H%2E%22">Carré, H.</searchLink><relatesTo>1</relatesTo><i> helene.carre@univ-pau.fr</i><br /><searchLink fieldCode="AR" term="%22La+Borderie%2C+C%2E%22">La Borderie, C.</searchLink><relatesTo>1</relatesTo><i> christian.laborderie@univ-pau.fr</i><br /><searchLink fieldCode="AR" term="%22Masson%2C+B%2E%22">Masson, B.</searchLink><relatesTo>2</relatesTo><i> benoit.masson@edf.fr</i><br /><searchLink fieldCode="AR" term="%22Tran%2C+N%2EC%2E%22">Tran, N.C.</searchLink><relatesTo>3</relatesTo><i> nhu-cuong.tran@edf.fr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Cement+%26+Concrete+Composites%22">Cement & Concrete Composites</searchLink>. Jul2017, Vol. 80, p326-332. 7p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Moisture+in+concrete%22">Moisture in concrete</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+power+plants%22">Nuclear power plants</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+reactor+containment%22">Nuclear reactor containment</searchLink><br /><searchLink fieldCode="DE" term="%22Tensile+strength%22">Tensile strength</searchLink><br /><searchLink fieldCode="DE" term="%22Fracture+mechanics%22">Fracture mechanics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In nuclear power plants, a severe accident in the containment building results in an increase in pressure, temperature and relative humidity that can reach respectively 5 bars, 140 °C and the saturation of water vapour. As well as the regulatory calculations, accurate knowledge of the thermal and mechanical behaviour of materials and more specifically of concrete is required to carry out more precise numerical simulations. Our study aims to investigate the mechanical behaviour of concrete under homogeneous conditions of moisture and temperature. An experimental apparatus was designed in order to assess the evolutions of the fracture energy, modulus of elasticity and tensile strength of concrete. Different temperature levels up to a maximum of 90 °C and at different values of the controlled moisture content were investigated. The equipment was used to perform DCT (Disk-shape Compact Tension) tests at 30 °C and 90 °C. Five levels of degree of liquid water saturation ( S w ) were investigated for each temperature level. Finite-element computations with the code Cast3m were carried out to determine the modulus of elasticity and the tensile strength from the results of DCT tests. The fracture energy is the same at 30 and 90 °C and decreases with S w between 36 and 100%. The modulus of elasticity decreases with temperature between 30 and 90 °C, decreases with S w between 36 and 55% and increases between 72 and 100%. The tensile strength decreases with temperature between 30 and 90 °C and increases with S w between 36 and 100% [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Cement & Concrete Composites is the property of Elsevier B.V. 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: 10.1016/j.cemconcomp.2017.03.021 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 326 Subjects: – SubjectFull: Moisture in concrete Type: general – SubjectFull: Nuclear power plants Type: general – SubjectFull: Nuclear reactor containment Type: general – SubjectFull: Tensile strength Type: general – SubjectFull: Fracture mechanics Type: general Titles: – TitleFull: Effect of temperature and moisture on the instantaneous behaviour of concrete. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kallel, H. – PersonEntity: Name: NameFull: Carré, H. – PersonEntity: Name: NameFull: La Borderie, C. – PersonEntity: Name: NameFull: Masson, B. – PersonEntity: Name: NameFull: Tran, N.C. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 09589465 Numbering: – Type: volume Value: 80 Titles: – TitleFull: Cement & Concrete Composites Type: main |
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