대한토목학회논문집 (KSCE Journal of Civil and Environmental Engineering Research)

  • 제41권6호
  • /
  • Pages.737-744
  • /
  • 2021
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  • 1015-6348(pISSN)
  • /
  • 2799-9629(eISSN)
대한토목학회 (Korean Society of Civil Engeneers)
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동시포설 공법을 위한 택코트 재료의 기초 성능 평가 연구

Basic Performance Evaluation of a Tack Coat Material for Use with a Spray Paver

  • 조신행 (경기대학교 토목공학과) ;
  • 김경남 (경기대학교 토목공학과) ;
  • ;
  • 김낙석 (경기대학교 토목공학과)
  • 투고 : 2021.07.22
  • 심사 : 2021.08.23
  • 발행 : 2021.12.01
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초록

최근 택코트 부착성능의 중요성이 높아지며 시공과정에서의 택코트 손실을 방지하기 위해 동시포설공법이 제안되고 있다. 동시포설공법은 아스팔트 페이버에 택코트 살포장치를 부착하여 택코트 살포와 동시에 아스팔트 혼합물을 포설하는 공법이다. 노후 콘크리트 포장의 아스팔트 덧씌우기 포장은 강성포장 위에 연성포장이 적용되기 때문에 이질적인 재료에 따른 부착성능의 확보가 더욱 중요하다. 이에 따라 동시포설공법으로 적용이 가능하고 이질적 재료에도 충분한 부착성능을 나타내는 택코트 재료가 필요하게 되었다. 본 연구는 동시포설공법을 위해 개발된 택코트 재료의 기초성능을 평가하기 위해 다양한 조건의 부착강도 실험을 수행하였다. 부착성능 평가결과 양생조건과 택코트 손실에 의해 부착성능에 차이가 발생함을 알 수 있었으며, 개발 재료는 동시포설공법과 동일한 시공조건 모사 실험에서 기존 재료 대비 인장접착강도 1.21배, 전단부착강도 1.99배 높은 부착성능을 나타내어 동시포설공법에 적용하기에 적합한 것으로 나타났다.

Spray paving minimizes material lost during the construction or repair of a road surface, and it can be done in conjunction with tack coating. This approach involves applying the asphalt mixture at the same time as spraying the tack coat by attaching a spraying device to the asphalt paver. When applying an asphalt overlay to an aged concrete surface, it is important to ensure the adhesion performance between different material properties. Accordingly, there is a need for a tack coat that can be applied by spray paving and that exhibits good adhesive performance on different materials. In this study, bonding strength tests under various conditions were performed to evaluate the basic performance of a tack coat developed for use with a spray paver. The bonding performance of the tack coat was observed to be affected by curing conditions and material lost during construction. The test results also showed that the tensile and shear bonding strengths of the developed tack coat were 1.21 and 1.99 times higher than those of a conventional one, respectively. As a result, the developed tack coat is considered suitable for application to spray paving.

키워드

과제정보

본 논문은 국토교통부와 국토교통과학기술진흥원의 교통물류연구사업인 "도로수명연장을 위한 고기능성 콘크리트 포장 유지보수 실용화 기술 개발"의 연구지원으로 수행되었으며 이에 관계자분들께 감사드립니다.

참고문헌

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