Long term monitoring of hot in-place recycled asphalt runway pavements in British Columbia

Title: Long term monitoring of hot in-place recycled asphalt runway pavements in British Columbia
Author(s): K.R. Fyvie, J.R. McCutchon, R. Flynn, J. Scarlett
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: 267 - 278
Total Pages: 12
Nb references: 5
Language: English

In the summer of 1994, asphalt paved runways at Penticton and Kamloops airports in British Columbia were rehabilitated using hot in-place recycling (HIR) to an average depth of 40mm, followed by the application of a nominal 50mm thickness, plant-produced, hot-mix asphalt overlay. In addition, on a demonstration project basis, taxiway 'A' at Penticton airport was also rehabilitated with hot in-place recycling, but without the addition of a hot-mix asphalt overlay (on a "stand-alone" basis).

This paper presents a review of the runway and taxiway rehabilitation methodology employed at each of the two airport sites and discusses the results of binder characterization testing of the recovered, recycled asphalt as part of a long term HIR pavement condition monitoring R&D project. Asphalt samples were recovered immediately following construction, and as part of three subsequent cycles of follow-up testing carried out in 1996, 1997 and 1999.

The test data obtained provides an indication of the rate of hardening of the rejuvenated asphalt binder, in terms of penetration and viscosity based on the site conditions encountered, the rehabilitation procedures adopted, and the paving materials incorporated on each of the respective projects. In addition, transverse crack development/propagation data was gathered, documented and mapped at each site during a five-year period following completion of the rehabilitation work. The crack development/propagation data is presented both numerically and graphically.

This review of changes in material characteristics and crack propagation should provide useful information to those contemplating similar projects in the future.

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

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