A Pilot Study on Emission Analysis of Air Pollutants Produced from Portable Recycling of Asphalt Concrete

간이이동법에 의한 폐아스콘 재생시 대기오염물의 배출분석에 대한 실험적 연구

Lee, Byeong-Kyu;Kim, Haeng-Ah;Jeong, Ui-Ryang;Duong, Trang;Chae, Po-Gi;Park, Kyung-Won

  • Published : 2007.03.28


Currently, portable equipment for recycling of waste asphalt concrete (ASCON) has been used. However, any air pollution control devices are not attached in the simple portable one. Thus, a lot of air pollutants have been produced from recycling processes of waste ASCON which resulted from aging of paved roads or repavement of roads. This study deals with a preliminary result of concentration analysis of air pollutants obtained from a pilot and a real recycling processes of waste ASCON using simple portable recycling equipment. Air pollutants were taken from 4 steps of the pilot recycling process including an initial heating by liquid petroleum gas (LPG), intermediate heating and melting (H&M) process, final H&M process, and pavement processes using recycled ASCON at the recycling site. Also, air pollutants were taken front 4 steps of the real recycling processes including an initial H&M, final H&M and mixing, loading of recycled ASCON to dump trucks, and at the recycling site after leaving the loaded dump trucks for real pavement sites. The air pollutants measured in this study include volatile organic compounds (VOCs), aldehydes, particulate matter (PM: PM1, PM2.5, PM7, PM10, TSP (total suspended particulate)). The identified concentrations of VOCs increased with increasing time or degree for H&M of waste ASCON. In particular, very high concentrations of the VOCs at the status of complete melting, which is exposed to the air, of the waste ASCON just before paving tv the recycled ASCON at the recycling site. Also, considerable amount of VOCs were identified from the recycling equipment after the dump trucks leaded by recycled ASCON leaved the recycling site for the pavement sites. The relative level of formaldehyde exceeded 80% of the aldehydes Identified in the recycling processes. This is because the waste ASCON is exposed to direct flame of LPG during H&M processes. The PM concentrations measured in the winter recycling processes, such as the loading and rotation processes of waste ASCON into/in the recycling equipment for H&M, were much higher than those in the summer ones. In particular, the concentrations of coarse particles such as PM7 and PM10 during the winter recycling were very high as compared those during the summer one.


Asphalt concrete;Air emission;Recycling;Particulate matter;Heating


  1. 건설교통부 홈페이지, 2007, 도로현황.
  2. 한국아스콘공업협동조합연합회 홈페이지, 2007. 통계 (생산, 납품실적),
  3. 권수안, 2006, 국내 아스팔트 포장의 현황 및 미래를 위한 개선방향, 아스팔트 도로포장의 혼합물 생산 및 시공품질 향상을 위한 국제심포지움, Proceeding, 7-27
  4. 이병규, 2001, 폐아스팔트 재활용기술개발연구, 울산대학교 지역공동연구센터, 제8차 년도 지역 컨소시엄 연구과제 최종결과보고서, 1-28
  5. 환경부 자원순환국 산업폐기물과, 2006, 건설폐기물의 현황과 향후관리 방안.
  6. 환경부 자원순환국, 2006, 건설폐기물재활용 촉진 관련규정 및 민원사례집, 1-293,
  7. 환경부, 2007, 2004, 전국폐기물 발생 및 처리 현황, 환경부홈페이지, 환경통계자료,
  8. 환경정책평가연구원, 2004. 건설폐기물 분리배출 및 발생단위 산정등에 관한 연구. /04_pu bl/pdf/report/%5B03_ CR30% 5D%EA%Bl%B4%EC%84%A4%ED%8F%90%E A%B8%BO%EB%AC%BC%EB%B6%84%EB% A6%AC%EB%BO%BO%EC%B6%9C(%EC%9D %B4%ED%9D%AC%EC%84%AO).pdf