EP 0929719 A1 19990721 - THREE-LAYERED ROAD STRUCTURE
Title (en)
THREE-LAYERED ROAD STRUCTURE
Title (de)
DREISCHICHTENSTRUKTUR FÜR STRASSEN
Title (fr)
STRUCTURE TRICOUCHE DE CHAUSSEE
Publication
Application
Priority
- FR 9701740 W 19971002
- FR 9612001 A 19961002
Abstract (en)
[origin: FR2753999A1] The invention concerns a novel road structure in which the bearing portion on top of the ground comprises three successive layers of bituminous material bonded with one another, viz.: a base layer which rests on the ground with optional insertion of a forming layer of thickness Hi such that: 4 cm </= Hi </= 10 cm. and of elastic modulus: Ei; a median layer of thickness Hm such that: 4 cm. </= Hm </= 20 cm. and of elastic modulus Em such that: 2000 MPa < EM < 8000 MPa; a top layer of thickness Hs such that: 4 cm. </= Hs < 10 cm. and of elastic modulus Es, said elastic moduli of said layers complying with relationship of inequality (a) and (b).
IPC 1-7
IPC 8 full level
E01C 7/18 (2006.01)
CPC (source: EP US)
E01C 7/18 (2013.01 - EP US)
Citation (search report)
See references of WO 9814663A1
Designated contracting state (EPC)
ES FR GB IE PT
DOCDB simple family (publication)
FR 2753999 A1 19980403; FR 2753999 B1 19981218; CA 2268167 A1 19980409; CA 2268167 C 20041214; CZ 109199 A3 20000315; CZ 295040 B6 20050518; EP 0929719 A1 19990721; EP 0929719 B1 20030319; ES 2188986 T3 20030701; PT 929719 E 20030731; US 6089783 A 20000718; WO 9814663 A1 19980409
DOCDB simple family (application)
FR 9612001 A 19961002; CA 2268167 A 19971002; CZ 109199 A 19971002; EP 97943041 A 19971002; ES 97943041 T 19971002; FR 9701740 W 19971002; PT 97943041 T 19971002; US 26984399 A 19990401