Title:
From Asphalt to Concrete
Author(s):
Jacques Marchand, Michel Pigeon, Michel Tremblay, and Luc Boisvert
Publication:
Concrete International
Volume:
22
Issue:
6
Appears on pages(s):
27-31
Keywords:
concrete; asphalt; roadways; infrastructure deterioration; rehabilitation; economics of repair; environmental issues; recompaction; disposal of wastes; material stabilization techniques; stabilization with bituminous emulsion; cement slurry
DOI:
Date:
6/1/2000
Abstract:
The rapid deterioration of roadways in urban environments, which is generally due to an increase of both the traffic and the loads applied by the vehicles, is a major problem in North America. Rehabilitation is expensive. The construction industry thus has to face the challenge of developing new, relatively inexpensive, and environmentally friendly repair methods. The technique of crushing asphalt pavement and mixing it with a granular base can extend the service life, but it does not significantly improve the bearing capacity of the existing pavement. Material stabilization techniques have been used for many years. Researchers at Laval University recently began to investigate the possibility of replacing the bituminous emulsion with a cement slurry, a procedure termed high performance rehabilitation (HPR). The article summarized laboratory results and analyzes material properties, and also field tests carried out in Quebec, Canada.