KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Fundamental Properties of Asphalt Concrete Mixture as Using TDF Fly Ash as Mineral Filler

아스팔트 콘크리트 채움재로 TDF Fly Ash 적용에 따른 아스팔트 혼합물 기초 물성 평가

  • 최민주 (전북대학교 토목공학과) ;
  • 김혁중 (금호석유화학 중앙연구소) ;
  • 김용주 (한국건설기술연구원 도로연구소) ;
  • 이재준 (전북대학교 토목공학과 방재연구센터)
  • Received : 2016.12.05
  • Accepted : 2017.01.22
  • Published : 2017.04.01
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Abstract

TDF (Tire derived fuel) Fly ash is an industrial by-product when scraped tire was used a fuel source at the power plant. TDF Fly ash has been classified as domestic waste at the workplace so far and has not been appropriately utilized. We conducted a fundamental physical property test of asphalt mixture to investigate the possibility of using TDF Fly ash as a mineral filler of asphalt mixture for exploring new usage strategies. TDF Fly ash meets KS F 3501 asphalt mixture mineral filler criteria. And the optimal asphalt binder amount was determined to be 4.5% by Marshall design. Mineral filler content was determined at 3% and analyzed by comparing using mineral filler as stone powder. The basic physical property test of the asphalt mixture was evaluated to the provision indicated in "Production and Construction Guidelines for Asphalt Mixture" published by the Ministry of Land, Infrastructure and Transport. In the test, Marshall stability test, dynamic immersion test, tensile strength ratio test, wheel tracking test were carried out. As a result of the experiment, Marshall stability and dynamic stability satisfied the standards, and confirmed the stability and Dynamic immersion and tensile strength ratio test that TDF Fly ash is more effective for scaling and moisture resistance than stone dust. Therefore, in this research, it is expected that multilateral utilization of TDF Fly ash, and a positive effect can be also expected.

TDF (Tire derived fuel) Fly ash는 폐타이어를 발전소의 연료원으로써 사용하고 발생된 분말형태의 산업 부산물이다. TDF Fly ash는 현재까지 국내에서 사업장 폐기물로 분류되어 적절하게 활용되지 못하고 있다. 새로운 활용 방안 모색을 위해 TDF Fly ash를 아스팔트 혼합물용 채움재(Mineral filler)로써 적용하여 사용 가능성을 알아보는 아스팔트 혼합물 기초 물성 시험을 실시하였다. TDF Fly ash는 국내 KS F 3501의 아스팔트 혼합물 채움재 기준을 만족하였으며 마샬 배합설계를 진행하여 4.5%최적아스팔트함량을 결정하였다. 채움재 함량은 3%로 결정하였으며 채움재로써 석분을 사용하여 비교 분석 하였다. 아스팔트 혼합물 기초 물성 시험은 국토교통부에서 발간한 "아스팔트 혼합물 생산 및 시공지침"에서 제시된 규정으로 평가하였다. 시험은 마샬안정도 시험, 동적수침 시험, 인장강도비 시험, 휠 트랙킹 시험을 실시하였다. 실험결과, 마샬안정도와 동적안정도는 국토교통부에서 제시된 기준에 만족하여 안정성을 확인하였고 동적수침과 인장강도비 시험은 TDF Fly ash가 석분보다 박리저항성 및 수분저항성에 효과가 있음을 확인하였다. 따라서 본 연구에서는 TDF Fly ash의 다각적 활용이 예상 되며 긍정적인 효과를 기대할 수 있을 것으로 판단된다.

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References

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