ASPECTS OF AN INTEGRATED MATERIALS-PAVEMENT EVALUATION SYSTEM FOR ANALYSIS, DESIGN AND REHABILITATION . 5TH CONFERENCE ON ASPHALT PAVEMENTS FOR SOUTHERN AFRICA (CAPSA 89). PROCEEDINGS HELD IN SWAZILAND, 5-9 JUNE, 1989

The behavior and performance of asphalt concrete pavements are primarily dependent upon their resistance to low temperature cracking and high temperature plastic deformation. The results of research studies and observations of pavement performance indicate that asphalt binder viscosity is the primary factor affecting pavement cracking and the low temperature behaviorial properties of asphalt concrete mixtures. Correlations between low temperature mix properties and asphalt viscosity have been developed and incorporated into a computer program for mechanistic evaluation of asphalt pavement systems (MEAPS/CRACK3). This program incorporates a statistical grouping of Dynaflect test data obtained along a segment of pavement into deflection categories. Representative deflection data are selected and used to estimate layer moduli which are input into BISAR to simulate the measured deflection basin. A stress analysis is performed to evaluate maximum load and low temperature conditions for evaluation of pavement cracking potential. It is suggested that the Gyratory Testing Machine (GTM) can be used to design and/or to evaluate the shear and rutting resistance of mixtures for high temperature conditions. Results of an investigation using a GTM testing procedure indicated that the sensitivity of a mixture to changes in asphalt content can be evaluated by the GTM simulation of traffic densification.(A) For the covering abstract of the conference see IRRD 828827.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0620143959
• Corporate Authors:

  CAPSA

  PO BOX 993
  Manzini,   Swaziland 
• Authors:
  • Ruth, B E
• Publication Date: 1989

Language

• English

Media Info

• Pagination: p. 68-74
• Serial:
  • Publication of: CAPSA
  • Publisher: CAPSA

Subject/Index Terms

• TRT Terms: Binders; Bitumen; Computer programs; Concrete; Conferences; Cracking; Deflection; Forecasting; Loads; Moisture content; Nondestructive tests; Pavements; Rutting; Stresses; Subgrade (Pavements); Viscosity
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00604024
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 0-620-14395-9
• Files: ITRD, TRIS
• Created Date: Feb 28 1991 12:00AM