(19)

(11)

EP 1 029 134 A1

(12)

(43) Date of publication: 23.08.2000 Bulletin 2000/34 (21) Application number: 98954831.8 (22) Date of filing: 03.11.1998

(51) International Patent Classification (IPC)7: E02D 15/06 (86) International application number: PCT/NL9800/632 (87) International publication number: WO 9923/311 (00.00.0000 Gazette 1999/19)

(84) Designated Contracting States: BE DE GB IE NL (30) Priority: 03.11.1997 NL 1007431 (71) Applicant: HOLLANDSCHE BETON GROEP N.V. 2280 AB Rijswijk (NL)	(72) Inventor: DIRKS, Ronny NL-3135 JG Vlaardingen (NL) (74) Representative: Jorritsma, Ruurd  Nederlandsch OctrooibureauScheveningseweg 82P.O. Box 29720 2502 LS Den Haag 2502 LS Den Haag (NL)