A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Recent Development of Pavement Engineering Research in Hong Kong
The paper discusses the successful adoption of four major types of pavement materials in Hong Kong, namely porous asphalt, recycled asphalt pavement, asphalt rubber and stone mastic asphalt, based on the research works carried out in recent years by the Hong Kong Road Research Laboratory. Regarding the porous asphalt (PA), the study results indicated that the design with polymer modified binders exhibit smaller temperature susceptibility and higher resistances against ageing, rutting and fatigue than the one with conventional penetration 60/70 binder. For the study of new pavement incorporated with 15% of recycled asphalt pavement (RAP), it was found that the RAP materials performed as good as the control mixture of virgin material in terms of stiffness, water sensitivity, rutting and fatigue resistances. The site and laboratory testing results of asphalt rubber (AR) showed that the performance of the asphalt rubber wearing course was better than that of the conventional wearing course in providing good rideability, good fictional property, high water damage resistance and quiet surface. The properly designed stone mastic asphalt (SMA) mixture with modifier and admixture were able to enhance the rutting and fatigue resistances of a conventional SMA material. It is anticipated that the future direction of pavement engineering research in Hong Kong will be a more prominent utilization of accelerated pavement testing technique, and the first step taken would be the development of an accelerated pavement testing (APT) facility which will also be highlighted towards the end of the paper.
Recent Development of Pavement Engineering Research in Hong Kong
The paper discusses the successful adoption of four major types of pavement materials in Hong Kong, namely porous asphalt, recycled asphalt pavement, asphalt rubber and stone mastic asphalt, based on the research works carried out in recent years by the Hong Kong Road Research Laboratory. Regarding the porous asphalt (PA), the study results indicated that the design with polymer modified binders exhibit smaller temperature susceptibility and higher resistances against ageing, rutting and fatigue than the one with conventional penetration 60/70 binder. For the study of new pavement incorporated with 15% of recycled asphalt pavement (RAP), it was found that the RAP materials performed as good as the control mixture of virgin material in terms of stiffness, water sensitivity, rutting and fatigue resistances. The site and laboratory testing results of asphalt rubber (AR) showed that the performance of the asphalt rubber wearing course was better than that of the conventional wearing course in providing good rideability, good fictional property, high water damage resistance and quiet surface. The properly designed stone mastic asphalt (SMA) mixture with modifier and admixture were able to enhance the rutting and fatigue resistances of a conventional SMA material. It is anticipated that the future direction of pavement engineering research in Hong Kong will be a more prominent utilization of accelerated pavement testing technique, and the first step taken would be the development of an accelerated pavement testing (APT) facility which will also be highlighted towards the end of the paper.
Recent Development of Pavement Engineering Research in Hong Kong
Cheung, L. W. (author) / Wong, W. G. (author) / Leung, Gordon L. M. (author)
Seventh International Conference on Traffic and Transportation Studies (ICTTS) 2010 ; 2010 ; Kunming, China
Traffic and Transportation Studies 2010 ; 1276-1285
2010-07-26
Conference paper
Electronic Resource
English
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