한국도로학회논문집 (International Journal of Highway Engineering)

  • 제14권5호
  • /
  • Pages.21-29
  • /
  • 2012
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  • 1738-7159(pISSN)
  • /
  • 2287-3678(eISSN)
한국도로학회 (Korean Society of Road Engineers)
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다기능 복합 포장용 섬유보강 콘크리트 기층 재료의 역학적 특성평가

Mechanical Performance of Fiber Reinforced Lean Concrete for Subbase of Newly Developed Multi-Functional Composite Pavement System

  • 장영재 (강원대학교 대학원 토목건설공학과) ;
  • 박철우 (강원대학교 공학대학 토목공학과) ;
  • 박영환 (한국건설기술연구원 인프라구조연구실) ;
  • 정우태 (한국건설기술연구원 인프라구조연구실) ;
  • 최성용 (한국건설기술연구원 인프라구조연구실) ;
  • 유평준 (한국건설기술연구원 도로연구실)
  • 투고 : 2012.03.20
  • 심사 : 2012.06.20
  • 발행 : 2012.10.15
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초록

PURPOSES: This study is to investigate the mechanical performance of the fiber reinforced lean concrete with respect to different types of fibers. METHODS: Increased vehicle weight and other causes from the exposed conditions have accelerated the deteriorations of road pavement. A new multi-functional composite pavement system is being developed recently in order to extend service life and upgrade the pavement. A variety of tests were conducted before and after hardening of the concrete. RESULTS: From the test results, it was found that the use of different types of fibers did not affect the compressive strength development. This might be due to the inherent property of the lean concrete. When steel fibers were used relatively greater flexural strength and flexural fracture toughness were developed. Also addition of fly ash by replacing a part of Portland cement the fracture toughness was slightly increased. CONCLUSIONS: It has been known that the addition of fibers and use of mineral admixture can be positively considered in the development of multi-functional composite pavement system as its required mechanical performance is obtained.

키워드

참고문헌

  1. Park, Jongsub, 2009. Development of Fiber Reinforced Concrete for Pavements, Research Report 2009-096, KOREA INSTITUTE OF CONSTRUCTION TECHNOLOGY.
  2. Sin, Nare, Park, Cheolwoo, Kim, Giheon, 2011. Strength Development of Roller Compacted Concrete with Respect to Compaction Levels, Proc. of Korea Concrete Institute, Vol.13, No.2, pp.61-62.
  3. Yeo, Hyun Dong. Jeong, Sung Won. Kim, Gwang Duk. Kwon, Soo Ahn. Jeong, Jin Hoon.(2010) "Evaluation of Early Stage Performance of Geogrid-reinforced Asphalt Overlay Pavements", Proc. of Korean Society of Road Engineers, pp.395-400.
  4. Jang, Youngjae, Park, Cheolwoo, Park, Younghwan, Jung, Wootai, Choi, Sungyong, Sin, Nare, 2011, Fracture Toughness Comparison of Fiber Reinforced Lean Concrete Incorporating Fly Ash or Reject Ash, Proc. of Korea Concrete Institute, Vol.23, No.2, pp.145-146. https://doi.org/10.4334/JKCI.2011.23.2.145
  5. Choi, Woohyun, Park, Cheolwoo, Park, Jongsub, Jung, Wootai, Jang, Youngjae, 2011, Strength Development of Fiber Reinforced Lean Concrete for road base with respect to fiber types, Proc. of Korea Concrete Institute, Vol.23, No.1, pp.385-386.
  6. Choi, Woohyun, Park, Cheolwoo, Park, Jongsub, Jung, Wootai, Jang, Youngjae, 2011, Strength Development of Fiber Reinforced Lean Concrete for Subbase Material, Proc. of Korean Society of Road Engineers, pp.153-158.
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