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Threshold values of air permeability of concrete cover - a case study in Japan



Title: Threshold values of air permeability of concrete cover - a case study in Japan
Author(s): K. Imamoto, K. Shimozawa, M. Nagayama, J. Yamasaki, S. Nimura
Paper category : conference
Book title: RILEM Symposium on On Site Assessment of Concrete, Masonry and Timber Structures - SACoMaTiS 2008
Editor(s): L. Binda, M. di Prisco, R. Felicetti
Print-ISBN: 978-2-35158-061-5
e-ISBN: 978-2-35158-075-2
Publisher: RILEM Publications SARL
Publication year: 2008
Pages: 169 - 177
Total Pages: 9
Nb references: 10
Language: English


Abstract: This paper deals with the air-permeability of concrete cover and its relation to carbonation resistance for Japanese concretes. First, a comparative study was performed with three kinds of air-permeability testers (the single-chamber method, Figg’s intrusive method and the Torrent permeability tester), and their capabilities to differentiate the qualities of concretes were examined using six different concrete specimens. Second, the classifications of airpermeability based on the RILEM TC 116-PCD method and the Torrent permeability tester (TPT) method were compared for Japanese concretes. Also, threshold values of the singlechamber method and Figg’s intrusive methods were proposed. Finally, these testers were used to conduct on-site assessment to investigate the air-permeability of full-scale reinforced concrete walls.


Online publication: 2009-05-26
Publication type : full_text
Public price (Euros): 0.00