A simple approach to the design of pavements incorporating grouted macadams

Grouted macadams form a semi-flexible class of composites whose behaviourlies somewhere between concrete and conventional asphalt materials, having both excellent rut resistance and a degree of flexibility. A series of pavement design computer simulations, base don results obtained from laboratory fatigue and stiffness tests on grouted macadam and conventional asphalt mixtures. The design variables explored include the application of grouted macadams both as surface and binder/base course layers. Comparisons were made with conventional asphalt surface and base course constructions. The resultant stresses, strains and fatigue lives were determined based on four classes of pavement foundations with increasing bearing capacity. In order to simulate traffic loading more realistically, the fatigue characterisation tests carried out on the grouted macadam mixtures incorporated and examined the effect of rest periods on fatigue performance. Key findingsand results for both composite types are discussed. It is suggested thatthe incorporation of grouted macadams is likely to provide an economical solution in many pavement design circumstances owing to their superior stiffness and fatigue characteristics. For the covering abstract see ITRD E133040.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9789609184922
• Authors:
  • OLIVEIRA, J R
  • ZOOROB, S E
  • THOM, N H
  • PEREIRA, P A
• Publication Date: 2007-4

Language

• English

Media Info

• Serial:
  • PROCEEDINGS OF THE 4TH INTERNATIONAL CONFERENCE BITUMINOUS MIXTURES AND PAVEMENTS, HELD THESSALONIKI, GREECE, APRIL 2007 - VOLUME 1
  • Issue Number: p239-49

Subject/Index Terms

• TRT Terms: Bearing capacity; Bituminous macadam; Composite materials; Conferences; Loads; Mechanical fatigue; Pavement base course; Pavement design; Pavement surface course; Rigid pavements; Stiffness; Surfacing
• Uncontrolled Terms: Injection (Materials)
• ITRD Terms: 2990: Basecourse; 3085: Bearing capacity; 9005: Composite; 8525: Conference; 5579: Fatigue (mater); 3617: Injection (mater); 5567: Load; 3055: Pavement design; 2953: Semi rigid pavement; 5931: Stiffness; 2972: Surfacing; 4932: Tarmacadam
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01081908
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 9789609184922
• Files: ITRD
• Created Date: Nov 29 2007 2:26PM