CRACKING OF BITUMEN COATINGS AT LOW TEMPERATURES - THERMAL STRESS RESTRAIN TESTS AND ACOUSTIC EMISSION TESTS

This article deals with the performance of bituminous coatings at low temperature. It comprises a study of related phenomena (thermal and mechanical) which appear in the body of the road surface. A study was undertaken to evaluate the thermal and mechanical performance of bitumen materials at low temperatures. To achieve this a new experimental device was developed at the Department of Civil Engineering and Construction (DGCB) of the National Postgraduate School of State Public Works, in partnership with the TOTALFINAELF company. An electromechanical type of press and an enclosed thermostat allow mechanical and temperature stresses to be applied independently. In particular, the equipment allows us to carry out thermal stress restrain tests and direct traction tests at a constant distortion rate. Firstly, the prototype devised and created at the DGCB is described. The operating principle is dealt with, including detail on the technical characteristics of the loading system. An inventory is provided of the equipment used for instrumentation, together with its specifications. One of the original features of this test is that it tracks damage by measuring acoustic emissions. Some results are presented relating to the first analyses of acoustic emissions measured during thermal stress restrain tests on samples of pure bitumen (50/70) coatings. For the covering abstract see ITRD E117423.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/2912143357
• Corporate Authors:

  RILEM PUBLICATIONS S.A.R.L

  157 RUE DES BLAINS
  BAGNEUX,   France  F-92220
• Authors:
  • CORDEL, S
  • Di Benedetto, H
  • MALOT, M
  • CHAVEROT, P
  • Perraton, D
• Conference:
  • PERFORMANCE TESTING AND EVALUATION OF BITUMINOUS MATERIALS PTEBM'03. PROCEEDINGS OF THE 6TH INTERNATIONAL RILEM SYMPOSIUM HELD ZURICH, SWITZERLAND, 14-16 APRIL 2003
• Publication Date: 2003

Language

• Undetermined

Media Info

• Features: References;
• Pagination: p. 465-72

Subject/Index Terms

• TRT Terms: Conferences; Cracking; Flexible pavements; Tests
• ITRD Terms: 8525: Conference; 5211: Cracking; 2944: Flexible pavement; 6255: Test
• Subject Areas: Data and Information Technology; Highways;

Filing Info

• Accession Number: 00943389
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 2-912143-35-7
• Files: ITRD
• Created Date: Jun 11 2003 12:00AM