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

2016 Fiscal Year Final Research Report

• 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
• 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

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.

Free Research Field

土木工学