Reflective cracking on C-SHRP long term pavement performance sites

Title: Reflective cracking on C-SHRP long term pavement performance sites
Author(s): A. Shalaby, L. Fréchette
Paper category : conference
Book title: Fourth International RILEM Conference on Reflective Cracking in Pavements - Research in Practice
Editor(s): A. O. Abd El Halim, D. A. Taylor
and El H. H. Mohamed
Print-ISBN: 2-912143-14-4
e-ISBN: 2351580265
Publisher: RILEM Publications SARL
Publication year: 2000
Pages: 241 - 250
Total Pages: 10
Nb references: 7
Language: English

Reflective cracking is associated with the premature occurence of cracks on overlays at positions and orientations that correspond to locations of cracks in lower pavement layers. The paper reports on a study commissioned by the Canadian Strategic Highway Research Program (C-SHRP) to evaluate reflective cracking trends on the Long Term Pavement Performance (C-LTPP) test sections. The C-LTPP sites have been in operation since 1989 and 1990. The paper outlines the data available to the study and in detail discusses three examples of the twenty-four test sites. The three selected sites are located in Manitoba, Ontario and Quebec. These sites provide an insight into reflective cracking under varying climatic conditions and traffic volumes.

At each C-LTPP site, two to four side-by-side test sections were constructed with the purpose of studying and optimizing rehabilitation strategies. One of the sections represented the provincial agency's typical design while other alternatives considered a different overlay thickness or another design factor such as the use of recycled or modified binders. The results included comparison of cracking extents in original and overlaid pavements and the annual progression of cracking. Since reflective cracking appears early in the pavement life, the comparisons were based on the first five years of operation. The study provides essential information on the performance of the test sections to C-SHRP and Canadian highway agencies.

Online publication: 2009-12-23
Publication type : full_text
Public price (Euros): 0.00

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