(19)

(11)

EP 0 085 067 A1

(12)

(43) Date of publication: 10.08.1983 Bulletin 1983/32 (21) Application number: 82902251.0 (22) Date of filing: 22.07.1982

(51) International Patent Classification (IPC):  C04B 20/ 10( . ) (86) International application number: PCT/DK1982/000071 (87) International publication number: WO 1983/000324 (03.02.1983 Gazette 1983/04)

(84) Designated Contracting States: DE FR GB NL SE (30) Priority: 27.07.1981 DK 19810003339 (71) Applicants: AGRI CONTACT DK-3390 Hundested (DK) PERSTRUP BETON-INDUSTRI DK-8560 Kolind (DK)	(72) Inventor: STRABO, Finn Christian DK-3000 Helsingor (DK) (74) Representative: Ryrlén, J. Evert  Awapatent AB Södra Hamngatan 37-41 P.O. Box 11394 S-404 28 Göteborg S-404 28 Göteborg (SE)