ON THE LOW TEMPERATURE CRACKING OF ASPHALT PAVEMENTS

Fundamental concepts as well as factors influencing low temperature cracking are described in this report in a state of the art description of current knowledge. A compilation of laboratory test methods for the characterisation of low temperature behaviour of bituminous binders and mixtures is given, together with models for relating the measured properties to field performance. A summary of field investigations related to low temperature cracking is also presented and the current state of knowledge is discussed. Among the main factors influencing low temperature cracking of asphalt concrete mixtures are bitumen characteristics. A laboratory investigation was conducted using a total of five different plain bitumens and five polymer modified bitumens in three different types of mixtures (dense graded, split mastic and porous asphalt). In addition, various gussasphalt mixtures were analysed. Statistically significant relationships between binder characteristics (rheological as well as chemical) and fracture temperature of asphalt concrete mixtures were established. Another important factor with regard to low temperature behaviour of asphalt pavements is the degree of ageing; the older the pavement, the greater the incidence of thermal cracking. A test program was developed to evaluate the effect of long-term ageing on the low temperature cracking properties of asphalt concrete mixtures using Thermal Stress Restrained Specimen Test (TSRST). Thermal contraction characteristics of asphalt concrete mixtures are of significant importance for the occurrence of low temperature cracks. A new method for determination of the thermal volumetric contraction coefficient has been developed. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/1104683X
• Corporate Authors:

  KUNGLIGA TEKNISKA HOEGSKOLAN, INSTITUTIONEN FOER INFRASTRUKTUR OCH SAMHAELLSPLANERING

  STOCKHOLM,   Sweden  SE-100 44
• Authors:
  • HUAYANG, Z
• Publication Date: 1995

Language

• English

Media Info

• Features: References;
• Pagination: 167P+A p.
• Serial:
  • KTH INFRASTRUKTUR OCH SAMHAELLSPLANERING RAPPORT
  • Issue Number: 95:7
  • Publisher: KUNGLIGA TEKNISKA HOEGSKOLAN, INSTITUTIONEN FOER INFRASTRUKTUR OCH SAMHAELLSPLANERING
  • ISSN: 1104-683X

Subject/Index Terms

• TRT Terms: Aging (Materials); Behavior; Bitumen; Bituminous mixtures; Cracking; Inventory; Polymerization; Shrinkage; Temperature; Test procedures; Theses; Thickness
• Uncontrolled Terms: Cold
• ITRD Terms: 5292: Ageing; 9001: Behaviour; 4963: Bitumen; 4967: Bituminous mixture; 9116: Cold; 5211: Cracking; 9035: Inventory; 7481: Polymerization; 4743: Shrinkage; 6722: Temperature; 6288: Test method; 8597: Thesis; 5933: Thickness
• Subject Areas: Freight Transportation; Safety and Human Factors;

Filing Info

• Accession Number: 00731404
• Record Type: Publication
• Source Agency: Swedish National Road and Transport Research Institute (VTI)
• Files: ITRD, ATRI
• Created Date: Feb 27 1997 12:00AM