Development and application of environment-friendly asphalt extraction test technology using water as the extracting solvent

• Project/Area Number: 26820179
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: Nihon University
• Principal Investigator: KANOU Yousuke 日本大学, 生産工学部, 講師 (50451315)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2016: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: アスファルト / アスファルト混合物 / 抽出技術 / 亜臨界水 / 高温高圧水 / 品質管理試験 / 品質管理 / アスファルト抽出試験 / 環境調和型技術 / 高温高圧水技術 / ポリマー改質アスファルト / アスファルト混合物再生骨材 / ポーラスアスファルト混合物 / アスファルト量 / 骨材合成粒度

Outline of Final Research Achievements

This research is aimed at the development and application of technology for extraction of asphalt from asphalt mixture using water as the solvent instead of chemicals that are hazardous to human health and the environment.
A program of research was conducted in fiscal 2014 and 2015 for the development of extraction testing. This research found that it was possible to extract diverse asphalt both swiftly and precisely by use of subcritical water with a temperature of 350 degrees Celsius. It also resulted in the development of a safe and efficient test procedure and automatic extraction unit.
The research conducted in fiscal 2016 was aimed at application of the extraction technology. It confirmed that reaction with the subcritical water tended to lighten the asphalt, and elucidated possibilities for application as technology for recovery of the properties of deteriorated asphalt.

Research Products

• [Journal Article] アスファルト舗装発生材を素材状態に復元する分別再材料化技術の提案 (2017)
  • Author(s): 加納陽輔、秋葉正一、赤津憲吾
  • Journal Title: 舗装 Volume: 6 Pages: 14-19
  • NAID: 40021231232
  • Acknowledgement Compliant
• [Journal Article] アスファルト舗装発生材の分別再材料化技術に関する基礎的検討 (2016)
  • Author(s): 加納陽輔、秋葉正一、赤津憲吾
  • Journal Title: 土木学会論文集E1（舗装工学） Volume: 72、No.3 Pages: 61-68
  • NAID: 130005312126
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 亜臨界水を抽出溶媒としたアスファルト混合物抽出試験法の提案 (2016)
  • Author(s): 赤津憲吾、加納陽輔、秋葉正一、佐藤克己
  • Journal Title: 土木学会論文集E1（舗装工学） Volume: 72、No.1 Pages: 31-41
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 亜臨界水を溶媒とした環境適合型アスファルト抽出試験 (2016)
  • Author(s): 加納陽輔、秋葉正一、赤津憲吾、岩田幸浩
  • Journal Title: 舗装 Volume: 51、No.10 Pages: 22-27
  • Acknowledgement Compliant
• [Presentation] アスファルト舗装発生材の分別再材料化技術に関する基礎的検討 (2016)
  • Author(s): 加納陽輔、秋葉正一、赤津憲吾
  • Organizer: 第21回土木学会舗装工学講演会
  • Place of Presentation: 土木学会
  • Year and Date: 2016-12-08
• [Presentation] 亜臨界水を抽出溶媒とした環境調和型アスファルト抽出試験に関する研究 (2015)
  • Author(s): 赤津憲吾，秋葉正一，加納陽輔
  • Organizer: 土木学会年次学術講演会
  • Place of Presentation: 岡山大学 岡山市北区津島中1丁目1番1号
  • Year and Date: 2015-09-16