Bitumen rejuvenator products suitable for use in the recycling of road surfacing

• Main Authors: SANCHEZ CABA JESUS, PAEZ DUENAS ANTONIO
• Format: Patent
• Language: English; Spanish
• Published: 16.07.1998
• Edition: 6
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE; CORRECTING FLUIDS; DYES; FILLING PASTES; FIXED CONSTRUCTIONS; INKS; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

Bitumen rejuvenator products suitable for use in the recycling of road surfacing. Bitumen-based products which are useful in the recycling of aged asphaltic road surfacings have been discovered. Unlike those conventionally used, these products have the property of rejuvenating aged asphaltic bitumen. Because of this property treatments with rejuvenators are more economical than conventional treatments. The products have a penetration of between 250 and 300 (1/10 mm) and are manufactured from crudes with API degrees between 29 and 44. Deasphalted asphalts, vacuum residues, extracts of an aromatic nature and penetration bitumen can be included in their composition. The products to which this patent relates can be applied hot, fluidized or as emulsions. Mixing with old surfacing can be carried out in situ or at a central unit. PRODUCTOS REJUVENECEDORES DEL BETUN ADECUADOS PARA SU USO EN EL RECICLADO DE LOS PAVIMENTOS DE CARRETERAS. SE HAN DESCUBIERTO PRODUCTOS DE BASE BITUMINOSA UTILES PARA EL RECICLADO DE PAVIMENTOS ASFALTICOS ENVEJECIDOS. DICHOS PRODUCTOS, AL CONTRARIO QUE LOS UTILIZADOS CONVENCIONALMENTE, PRESENTAN LA PROPIEDAD DE REJUVENECER EL BETUN ASFALTICO ENVEJECIDO. DEBIDO A ESTA PROPIEDAD LOS TRATAMIENTOS REALIZADOS CON LOS REJUVENECEDORES SON MAS ECONOMICOS QUE LOS CONVENCIONALES. LOS PRODUCTOS PRESENTAN UNA PENETRACION COMPRENDIDA ENTRE 250 Y 300 (1/10 MM.) Y ESTAN FABRICADOS CON CRUDOS CON GRADOS API COMPRENDIDOS ENTRE 29 Y 44. EN SU COMPOSICION PUEDEN ENTRAR ASFALTO DE DESASFALTADO, RESIDUO DE VACIO, EXTRACTO DE NATURALEZA AROMATICA Y BETUN DE PENETRACION. LOS PRODUCTOS OBJETO DE ESTA PATENTE PUEDEN APLICARSE EN CALIENTE, FLUIDIFICADOS O EMULSIONADOS. LAS MEZCLAS CON EL PAVIMENTO ANTIGUO PUEDEN REALIZARSE IN SITU O EN CENTRAL.