(19)

(11)

EP 1 945 873 A1

(12)

(43) Date of publication: 23.07.2008 Bulletin 2008/30 (21) Application number: 06806622.4 (22) Date of filing: 31.10.2006

(51) International Patent Classification (IPC):  E04B 2/74(2006.01) (86) International application number: PCT/EP2006/010446 (87) International publication number: WO 2007/051588 (10.05.2007 Gazette 2007/19)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 31.10.2005 ZA 200508811 (71) Applicant: LAFARGE PLATRES 84915 Avignon Cedex 9 (FR)	(72) Inventor: BANKS, John, Hamilton, George 1451 Alberton (ZA) (74) Representative: Berruet, Laure  LAFARGE Département Propriété Intellectuelle (DPI) 95, Rue du Montmurier - BP9 38291 Saint Quentin Fallavier Cedex 38291 Saint Quentin Fallavier Cedex (FR)