EVOLUTION OF BINDERS AND BITUMINOUS MIXTURES ON THE ROAD. LABORATORY STUDY ON SAMPLES

EVOLUTION SUR ROUTE DE LIANTS ET ENROBES BITUMINEUX--ETUDE DE LABORATOIRE SUR PRELEVEMENTS

The study of the correlation between the behaviour of pavement materials and the deterioration of pavements implies an investigation into the evolution of bituminous mixtures and binders once laid on the road. An experimental section was built to carry out the experiments. The asphaltic concretes laid were dense, had a high proportion of sand and contained three types of 80/100 bitumen. They were laid in thicknesses of 5 and 7 cm over two types of pavement foundation (a relatively thin layer over a fairly flexible support and a thicker layer over a stiffer support). At the time of laying, the average compaction was 92%. To differentiate the effects of weather from those of traffic, samples were taken before the section was opened to traffic and cured. For the binders, chemical and physico-chemical tests enable a follow-up study to be carried out in time. On the same samples, French Shell Laboratories and the LCPC conducted modulus of elasticity tests, ultimate direct tensile tests, and sinusoidal flexural fatigue tests. Details are given of these various tests the results obtained in the laboratory, the use of these results and the conclusions derived from them. A similar evolution was observed on the three 80/100 binders which, at the age of 5, became 20/30 binders. The hardening of the binders and high compaction caused by traffic modified the mechanical properties of the bituminous mixtures. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00852643
• Corporate Authors:

  Central Laboratory of Bridges & Highways, France

  75732 Paris,   France 
• Authors:
  • Doaniels
  • Grignard, A
• Publication Date: 1975-6

Language

• French

Media Info

• Features: Figures; References; Tables;
• Pagination: 88 p.
• Serial:
  • Publication of: Central Laboratory of Bridges & Highways, France
  • Publisher: Central Laboratory of Bridges & Highways, France
  • ISSN: 0085-2643

Subject/Index Terms

• TRT Terms: Aging (Materials); Asphalt concrete; Binders; Bitumen; Bituminous mixtures; Compaction; Concrete hardening; Deflection; Deterioration; Development; Durability; Experimental roads; Failure; Fatigue (Mechanics); Hardness; Laboratories; Laboratory studies; Pavements; Pendulum tests; Research reports; Samples; Stiffness; Tension; Tests; Time; Traffic
• Geographic Terms: France
• ITRD Terms: 5292: Ageing; 4963: Bitumen; 4967: Bituminous mixture; 3686: Compaction; 5904: Compaction (state of); 5586: Deflection; 9013: Development; 2778: Experimental road; 5520: Failure; 5579: Fatigue (mater); 8036: France; 4722: Hardening; 6237: Laboratory (not an organization); 2955: Pavement; 6285: Penetration; 8559: Research report; 6251: Sample (mater); 5931: Stiffness; 5502: Tension; 6255: Test; 5414: Time; 755: Traffic
• Subject Areas: Highways; Materials; Operations and Traffic Management; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00163131
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Research Report 45 Monograph
• Files: ITRD, TRIS
• Created Date: Mar 14 1978 12:00AM