Structural Engineering and Mechanics

  • 제22권1호
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  • Pages.71-83
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  • 2006
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Concrete beams submitted to various moisture environments

  • Multon, S. (Laboratoire Materiaux et Durabilite des Constructions) ;
  • Seignol, J.F. (Laboratoire Central des Ponts et Chaussees) ;
  • Toutlemonde, F. (Laboratoire Central des Ponts et Chaussees)
  • 투고 : 2004.10.21
  • 심사 : 2005.10.12
  • 발행 : 2006.01.10
⟨ 이전 논문 다음 논문 ⟩

초록

This paper deals with the effects of various moisture environments on the structural behavior of concrete beams. The presented results were obtained within a large experimental program carried out at the Laboratoire Central des Ponts et Chauss$\acute{e}$es (LCPC), with Electricit$\acute{e}$ de France (EDF) as a partner. The aim of this paper is to point out and to quantify the strains resulting from unidirectional moisture conditions: a drying gradient applied during 14 months, followed by the re-wetting of the dried surface during 9 months. The effect of reinforcement on the shrinkage and on the deformation due to water absorption is pointed out. Moreover, a lot of tests on companion cylinders and prisms were carried out to determine the mechanical characteristics of the material and help checking analysis methods. The paper focuses on numerous measurements obtained during the 23 months on one plain concrete beam and one reinforced concrete beam: variation of water content, followed by precise weighing and gammadensitometry, relative humidity measurements, local and global deformations in the three directions and deflection of the beams. Thus, the effects of drying and water absorption on the behavior of concrete structures are documented and analyzed in comparison with existing representation of water diffusion.

키워드

참고문헌

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  8. Multon, S. (2003), 'Evaluation experimentale et theorique des effets mecaniques de l'alcali-reaction sur des structures modeles', PhD-Thesis, Universite de Mame-Ia-Vallee
  9. Multon, S. and Toutlemonde, F. (2004), 'Water distribution in concrete beams', Mat. Struct., 37, 378-386 https://doi.org/10.1617/14031
  10. Multon, S., Merliot, E., Joly, M. and Toutlemonde, F. (2004), 'Water distribution in beams damaged by AlkaliSilica Reaction: Global weighing and local gammadensitometry measurements', Mat. Struct., 37, 282-288 https://doi.org/10.1007/BF02481673
  11. Multon, S., Seignol, J.-F. and Toutlemonde, F. (2003), 'Large beams subjected to ASR', Proc. of the 6th CANMET/ACI Int. Conf. on Durability of Concrete, Thessaloniki, Greece, ACI-SP210, 299-318
  12. Poyet, S. (2003) 'Etude de la degradation des ouvrages en beton atteints de la reaction alcali-silice: Approche experimentale et modeJisation numerique multi-echelle des degradations dans un environnement hydrochemomecanique variable', PhD-Thesis, Universite de Mame-la-ValIee
  13. Seignol, J-F., Barbier, F., Multon, S. and Toutlemonde, F. (2004), 'Numerical simulation of ASR affected beams, comparison to experimental data', Proc. of the 12th Int. Conf. on AAR, Beijing, China
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피인용 문헌

  1. Effect of moisture conditions and transfers on alkali silica reaction damaged structures vol.40, pp.6, 2010, https://doi.org/10.1016/j.cemconres.2010.01.011