1. 1) AGB2007/007: ASTRA Research Project “Recommendations for the quality control of concrete with air permeability measurements”. (http://www.aramis.admin.ch/Default.aspx?page=Texte&projectid=24243.)
2. 2) Torrent, R.: English Translation of “Recommendations for Quality Control of Concrete with Air-Permeability Measurements” (Swiss Federal Department of Transportation, December 2009), 2010. 9
3. 3) Jacobs, F. & Torrent, R.: Swiss Standard SIA 262:2003, a step towards performancebased specifications for durability, RILEM Conference Concrete in aggressive aqueous environments - Performance, Testing, and Modeling, Toulouse, France, 3-5 June 2009
4. 4) Torrent, R.: A twochamber vacuum cell for measuring the coefficient of the permeability to air of the concrete cover on site, Material & Structure., v.25, n.150, pp. 358-365, July 1992
5. 5) Jacobs, F.: Luftpermeabilität als Kenngrösse für die Qualität des Überdeckungsbetons von Betonbauwerken (in German), VSS-Bericht, No. 604, 85, Zurich, 2006