A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Introduction of Stone Matrix Asphalt for National Highways in Japan’s Cold, Snowy Regions
In cold, snowy Hokkaido, Japan, the road traffic environment is severe, particularly in winter. The Hokkaido Regional Development Bureau (HRDB), which administers the national highways in Hokkaido, has started to install porous asphalt to better secure the safety of vehicular traffic. However, the durability of such pavement has become an issue. In addition to the need to maintain vehicular traffic safety, the need to maintain sufficient durability has become important for pavements of national highways in the cold, snowy regions of Japan. We developed an asphalt mixture called high-performance stone matrix asphalt (HP-SMA). To evaluate its durability in a cold, snowy region, we conducted laboratory experiments using methods commonly used in Japan. The experiments clarified that HP-SMA has higher durability than porous asphalt. As the next step, the HP-SMA was installed on a trial basis on a section of a national highway. Through such installation, appropriate methods for installation and quality control were determined. The trial installation clarified that the durability of the HP-SMA depends heavily on the compaction quality. Therefore, in compacting HP-SMA, there are more points to bear in mind than for dense-graded asphalt. The most suitable compaction method for securing the required pavement quality with conventional machinery was determined. The proposed compaction method uses a three-wheel roller, a tandem roller, and a tire roller. To obtain higher durability than that achieved by the proposed method, the use of an oscillatory tandem roller was found to be effective.
Introduction of Stone Matrix Asphalt for National Highways in Japan’s Cold, Snowy Regions
In cold, snowy Hokkaido, Japan, the road traffic environment is severe, particularly in winter. The Hokkaido Regional Development Bureau (HRDB), which administers the national highways in Hokkaido, has started to install porous asphalt to better secure the safety of vehicular traffic. However, the durability of such pavement has become an issue. In addition to the need to maintain vehicular traffic safety, the need to maintain sufficient durability has become important for pavements of national highways in the cold, snowy regions of Japan. We developed an asphalt mixture called high-performance stone matrix asphalt (HP-SMA). To evaluate its durability in a cold, snowy region, we conducted laboratory experiments using methods commonly used in Japan. The experiments clarified that HP-SMA has higher durability than porous asphalt. As the next step, the HP-SMA was installed on a trial basis on a section of a national highway. Through such installation, appropriate methods for installation and quality control were determined. The trial installation clarified that the durability of the HP-SMA depends heavily on the compaction quality. Therefore, in compacting HP-SMA, there are more points to bear in mind than for dense-graded asphalt. The most suitable compaction method for securing the required pavement quality with conventional machinery was determined. The proposed compaction method uses a three-wheel roller, a tandem roller, and a tire roller. To obtain higher durability than that achieved by the proposed method, the use of an oscillatory tandem roller was found to be effective.
Introduction of Stone Matrix Asphalt for National Highways in Japan’s Cold, Snowy Regions
Lecture Notes in Civil Engineering
Tutumluer, Erol (editor) / Nazarian, Soheil (editor) / Al-Qadi, Imad (editor) / Qamhia, Issam I.A. (editor) / Tanaka, Shunsuke (author) / Maruyama, Kimio (author) / Kameyama, Shuichi (author)
2021-08-31
13 pages
Article/Chapter (Book)
Electronic Resource
English
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