Student written Research Laboratory Guidebook 2023Nagaoka University of Technology

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Highway Engineering Laboratory

Professor / Osamu TAKAHASHI

ProfessorOsamu TAKAHASHI

profiles and activiities profiles and activiities at nagaoka university of technology
  • Environmentally Friendly Technologies for Road Construction


Professor / Osamu TAKAHASHI
Professor TAKAHASHI is a hard working lecturer. He is passionate for everything he does, including lectures and hobbies. Our professor is always looking after us, not only guiding us in our research but also giving us advice when needed. He is also a healthy person who likes playing soccer and swimming in his free time.

Research Content

In this laboratory, there're two main approaches to research. The first is the development of new materials for asphalt pavements. This includes proposing a new combination of aggregates (stones, sand, etc.) and asphalt binders in order to have a better performance. Our second approach is focused on reclaimed materials for road paving purposes. It's a common practice to use reclaimed materials, but the evaluation criteria and standards have not been decided yet. Therefore, we're studying effective evaluation methods and evaluation parameters. Our laboratory has these approaches to study pavement materials, which are such an important part of our daily lives.

Force ductility test: (a) asphalt binder specimens; (b) specimen being pulled apart; (c) fractured specimen

A Day in the Lab

In the Highway Engineering Laboratory, students present their experiment data and report on the progress of their research at a meeting once every week. This is what we call a seminar. Those who conduct a research in our laboratory are hard at work preparing specimens and conducting experiments. All members of our laboratory are always willing to help each other with these activities. However, it is not all about working! We also hold various events, such as trips to other prefectures and barbeques with graduate students.

Laboratory members at Nagaoka station.

Thesis Subjects

  • (M)Experimental study on use of rejuvenator and polymer for recycling heavily aged asphalt binders.
  • (M)Study on effective utilization of non-standard reclaimed asphalt pavement for recycled asphalt mixtures.
  • (M)Study on practical production of recycled asphalt mixtures using high content non-standard reclaimed asphalt pavement.
  • (M)Study on rejuvenation of aged asphalt binder based on force ductility test.

The number of
PhD Graduates


Major employers of Graduates

  • NIPPO Corporation
  • Taisei Rotec Corporation
  • Taisei Corporation
  • Nippon Road
  • Niigata Prefectural Offices
  • Nichireki
  • Toda Corporation
  • Maeda Road Construction
  • JR East
Writer : Minh Hung NGUYEN, Civil and Environmental Engineering
(Ho Chi Minh city University of Technology)