Stiffness Master Curve Extensions of Polymer Modified Asphalt Binders and Mixes Based on Indirect Tensile Testing Results

Due to the limitations of laboratory testing, the stiffness master curves obtained from creep tests usually cannot sufficiently cover the time domain for thermal cracking prediction. This loading time domain involves a wide range from a split second to many hours, which is usually out of the ordinary for conventional testing capacity or convenience. To overcome the problem, this paper examines two existing explicit models, Christensen-Anderson-Sharrock (CAS) and Christensen-Anderson-Sharrock-Bouldin (CASB), for the purpose of the stiffness master curve extensions, based on the test results from the Bending Beam Rheometer (BBR) on some conventional and Polymer Modified Asphalt (PMA) binders and Indirect Tensile Test (IDT) on the mixes made from these binders. The stiffness master curves predicted by nomographs were also modified as an alternative model for the same purpose. It was found that for both binders and mixes, in the short loading time region, CAS or CASB can predict reasonable extensions of stiffness master curves, but the nomograph method is not as reliable as the two explicit models. In the long loading time region, the method selection to extend the master curves should be based on the analysis of each individual case although in general, the nomograph method is considered to provide more reasonable extensions than the other two models. For the covering abstract of this conference, see ITRD number E215112. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0921317654
• Authors:
  • STASTNA, J
  • BAI, B Q
  • ZANZOTTO, L
• Publication Date: 2006-11

Language

• English

Media Info

• Pagination: 1-29
• Serial:
  • PROCEEDINGS OF THE FIFTY-FIRST ANNUAL CONFERENCE OF THE CANADIAN TECHNICAL ASPHALT ASSOCIATION (CTAA): CHARLOTTETOWN, PRINCE EDWARD ISLAND, NOVEMBER 2006
  • Publisher: Polyscience Publications

Subject/Index Terms

• TRT Terms: Binder content; Bitumen; Conferences; Cracking; Creep; Loads; Mechanical relaxation; Stiffness; Test procedures; Thermal analysis
• Geographic Terms: Canada
• ITRD Terms: 4929: Binder content; 4963: Bitumen; 8018: Canada; 8525: Conference; 5211: Cracking; 4732: Creep (mater); 5567: Load; 5407: Relaxation (mech); 5931: Stiffness; 6288: Test method; 7152: Thermal analysis
• Subject Areas: Construction; Design; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials; I52: Construction of Pavements and Surfacings;

Filing Info

• Accession Number: 01079083
• Record Type: Publication
• Source Agency: Transportation Association of Canada (TAC)
• ISBN: 0-921317-65-4
• Files: ITRD
• Created Date: Oct 22 2007 9:56AM