CA2034260A1 - Softening agents for recycling asphalt pavement - Google Patents

Softening agents for recycling asphalt pavement

Info

Publication number
CA2034260A1
CA2034260A1 CA002034260A CA2034260A CA2034260A1 CA 2034260 A1 CA2034260 A1 CA 2034260A1 CA 002034260 A CA002034260 A CA 002034260A CA 2034260 A CA2034260 A CA 2034260A CA 2034260 A1 CA2034260 A1 CA 2034260A1
Authority
CA
Canada
Prior art keywords
asphalt
aged
rejuvenating
asphaltic
agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002034260A
Other languages
French (fr)
Other versions
CA2034260C (en
Inventor
Henry Sawatzky
Floyd I. Clelland
Brian A. Farnard
Jean Houde Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canada Minister of Energy Mines and Resources
Original Assignee
Canada Minister of Energy Mines and Resources
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canada Minister of Energy Mines and Resources filed Critical Canada Minister of Energy Mines and Resources
Priority to CA002034260A priority Critical patent/CA2034260C/en
Publication of CA2034260A1 publication Critical patent/CA2034260A1/en
Priority to EP93300023A priority patent/EP0558174B1/en
Application granted granted Critical
Publication of CA2034260C publication Critical patent/CA2034260C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Working-Up Tar And Pitch (AREA)

Abstract

Methods and compositions are provided for rejuvenating aged asphaltic paving material, or for improving the compatibility of aged asphalt in salvaged old asphalt paving materials with other asphaltic materials, or of improving the resilience to stripping of rejuvenated asphalt and aggregates, by the use of an agent which was heretofore not known to be a rejuvenating agent. Such rejuvenating agent is a sewage sludge-derived oil, or a fraction thereof, having a particularly recited composition.
This rejuvenating agent markedly lowers the viscosity of the aged asphalt, disperses the components of the aged asphaltic paving material for dispersion of such, or other added asphaltic components in the asphalt, and increases the adhesion of aged asphaltic paving material to aggregates. Such rejuvenating agent may be used together with other conventional rejuvenating agents and/or softening agents, e.g., hydrocarbon products with physical characteristics which are selected to restore aged asphalt to the requirement of current asphalt specifications, for example, soft virgin asphalts.
CA002034260A 1991-01-16 1991-01-16 Softening agents for recycling asphalt pavement Expired - Fee Related CA2034260C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002034260A CA2034260C (en) 1991-01-16 1991-01-16 Softening agents for recycling asphalt pavement
EP93300023A EP0558174B1 (en) 1991-01-16 1993-01-04 New softening agents for recycling asphalt pavement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64187291A 1991-01-16 1991-01-16
CA002034260A CA2034260C (en) 1991-01-16 1991-01-16 Softening agents for recycling asphalt pavement

Publications (2)

Publication Number Publication Date
CA2034260A1 true CA2034260A1 (en) 1992-07-17
CA2034260C CA2034260C (en) 2002-08-13

Family

ID=25674437

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002034260A Expired - Fee Related CA2034260C (en) 1991-01-16 1991-01-16 Softening agents for recycling asphalt pavement

Country Status (1)

Country Link
CA (1) CA2034260C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800006952A1 (en) * 2018-07-05 2020-01-05 Road surface restoration system of bituminous conglomerate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800006952A1 (en) * 2018-07-05 2020-01-05 Road surface restoration system of bituminous conglomerate

Also Published As

Publication number Publication date
CA2034260C (en) 2002-08-13

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed