SEMI-CIRCULAR BENDING TEST TO ASSESS THE RESISTANCE AGAINST CRACK GROWTH

In the near future asphalt pavement will be subjected to more extreme conditions, like higher axle loads, increased number of vehicles passing and so on. Due to this the resistance against cracking and crack propagation will become a more important factor. Amongst others this means that a good test method will be necessary to determine the crack resistance and the crack growth rate of bituminous mixtures. In the Netherlands in the nineties of the last century, a simple test was developed to measure these properties, the semi-circular bending (SCB) test. This test will be a part of the 12697-CEN test methods for characterisation of hot asphalt mixes. Recently a large number of tests were performed both on laboratory mixtures and on specimens obtained from the road to study the possibilities of the pseudo-static SCB test as a practical tool to determine the fracture toughness (=crack growth resistance). From the results of these tests it was concluded that the repeatability, the reproducibility and the discrimination between "good" and "bad" materials was good. Next to these tests also a cyclic SCB-test was developed to determine the Paris Law constants, i.e. crack growth rate parameters A and m. The tests performed with bituminous mixtures made in the laboratory indicate that the cyclic SCB-test is very promising for determination of the Paris constants, possibly enabling ranking of asphalt mixtures. 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:
  • HOFMAN, R
  • OOSTERBAAN, B
  • Erkens, S M J G
  • van der Kooij, J
• 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

• English

Media Info

• Features: References;
• Pagination: p. 257-63

Subject/Index Terms

• TRT Terms: Bitumen; Conferences; Cracking; Deformation; Measurement; Tests
• ITRD Terms: 4963: Bitumen; 8525: Conference; 5211: Cracking; 5595: Deformation; 6136: Measurement; 6255: Test
• Subject Areas: Data and Information Technology;

Filing Info

• Accession Number: 00943363
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 2-912143-35-7
• Files: ITRD, ATRI
• Created Date: Jun 11 2003 12:00AM