Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
권호 표지
DOI QR코드

DOI QR Code

An analytical Study for the Development of Highly Elastic Material applicable for Joint in Modular Pavement

모듈러 포장에 적용가능한 고탄성 연결재료 개발을 위한 해석적 연구

  • Lee, Young-Ho (Structural Engineering Research Division, Korea Institute of Construction Technology) ;
  • Kang, Su-Tae (Department of Civil Engineering, Daegu University) ;
  • Song, Jae-Joon (Structural Engineering Research Division, Korea Institute of Construction Technology) ;
  • Lee, Sang-Yoon (Structural Engineering Research Division, Korea Institute of Construction Technology)
  • 이영호 (한국건설기술연구원 인프라구조연구실) ;
  • 강수태 (대구대학교 토목공학과) ;
  • 송재준 (한국건설기술연구원 인프라구조연구실) ;
  • 이상윤 (한국건설기술연구원 인프라구조연구실)
  • Received : 2013.09.05
  • Accepted : 2013.11.07
  • Published : 2013.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

This study was intended to estimate the axial deformation of joint between pavement modules in the rapid-constructible modular pavement system, and to investigate the applicability of two-phase composites for a joint material, which was composed of cement paste, epoxy, or polyurethane as a matrix and sand as particles. A case which had supports under the pavement module as well as a case which the module was put on roadbed directly were considered in FEM analysis for the axial deformation. The effect of self-weight, live load, thermal change, and drying shrinkage were estimated and the thermal change was found to cause the largest deformation compared to the others. Deformation capacity of two-phase composites was predicted using the modified shear-lag model. In the analytical results for the elastic modulus and maximum tensile strain with different volume fractions of sand, 20~30 % replacement of sand was revealed to satisfy the required strain capacity with economy when if the width of joint was designed to be 15~20 mm.

본 연구에서는 급속시공이 가능한 모듈러 도로포장 시스템에서 포장체 모듈 사이의 조인트에서 발생하는 축방향 변형량을 평가하고, 시멘트 페이스트, 에폭시, 폴리우레탄을 매트릭스로 하는 2성상 복합재료에 대하여 조인트 연결재료로서의 적용가능성을 검토하였다. 포장체 모듈 하부에 받침이 있는 경우와 노반에 직접 접촉하는 경우에 대해 FEM해석을 실시하여 발생 변형량을 평가하였다. 변형 유발 요인으로 자중 및 활하중, 온도변화 및 건조수축을 고려하였으며, 그 중 온도변화에 의한 영향이 가장 큰 것으로 나타났다. 2성상 복합체의 변형성능 예측은 수정 전단지연 모델을 이용하여 수행하였다. 모래 혼입 부피비율에 따른 복합체의 탄성계수와 최대 인장변형률 변화를 검토한 결과, 15~20 mm의 조인트 폭에 대해, 폴리우레탄을 사용할 경우 모래를 20~30 % 비율로 치환함으로써 소요 변형성능을 확보하면서 동시 경제적인 조인트 연결재료로 활용할 수 있는 것으로 나타났다.

Keywords

References

  1. D. K. Merritt and S. D. Tayabji, Precast Prestressed Concrete Pavement for Reconstruction and Rehabilitation of Existing Pavements (FHWA-HIF-09-008), Federal Highway Administration, Washington DC, 2009.
  2. D. K. Merritt and S. S. Tyson, "Precast Prestressed Concrete Pavement-A Long-Life Approach for Rapid Repair and Rehabilitation", Proceedings of the International Conference on Long-Life Concrete Pavemens, Chicago, USA, pp. 497-512, October, 2006.
  3. L. J. M. Houben, M. Huurman, J. van der Kooij, and S. Poot, "Modieslab Innovative Concrete Pavement Structure: From Idea through Research to Implementation", Proceedings of the 8th International Conference on Concrete Pavements, Colorado, USA, pp. 75-92, August, 2005.
  4. S. M. Kim, H. B. Park, S. C. Yang, and S. H. Han, "Development of Construction Method and Design Guide for Newly Constructed Precast Concrete Pavements", Journal of the Korean Society of Road Engineers, Vol. 10, No. 2, pp. 193-203, 2008. (in Korean)
  5. S. C. Yang, S. M. Kim, T. S. Yoo, and S. H. Han, "Joint Stiffness Tests for Precast Concrete Pavements", Journal of the Korean Society of Road Engineers, Vol. 10, No.1, pp. 229-239, 2008. (in Korean)
  6. J. Giu, M. F. C. van de Ven, S. Wu, J. Yu, and A. A. A. Molenaar, "Investigating the Self Healing Capability of Bituminous Binders", Int'l Journal of Road Materials and Pavement Design, Vol. 10, Speical Issue, pp. 81-94, 2009. DOI: http://dx.doi.org/10.1080/14680629.2009.9690237
  7. J. S. Park, S. Y. Choi, W. T. Jung, and Y. H. Park, "An Experimental Study on Mechanical Properties of Hybrid Fiber Reinforced Concrete Pavement", Journal of the Korea Concrete Institute, Vol. 25, No. 1, pp. 11-18, 2013. (in Korean) DOI: http://dx.doi.org/10.4334/JKCI.2013.25.1.011
  8. D. K. Merritt, B. F. Mccullough, N. H. Burns, and A. K. Schindler, The Feasibility of Using Precast Concrete Panels to Expedite Highway Pavement Construction, Research Report 1517-3F, The University of Texas at Austin, 2000.
  9. P. J. Smith and E. J. Barenberg, "Using Precast Super-Slab(R) for Rapid Repair of Concrete Pavement, Proceedings of the 8th Int'l Conference on Concrete Pavements, Colorado, USA, August, pp. 789-807, 2005.
  10. V. Perry, D. Dykstra, P. Murray, and B. Rajlic, "Innovative Field Cast UHPC Joints for Precast Bridge Systems-3-span Live Load Continuous", Proceedings of the 2010 Annual Conference of the Transportation Association of Canada, Nova Scotia, Canada, pp.1-15, 2010.
  11. M. D. Lepech and V. C. Li, "Application of ECC for Bridge Deck Link Slabs", Materials and Structures, Vol. 42, pp. 1185-1195, 2009. DOI: http://dx.doi.org/10.1617/s11527-009-9544-5
  12. Korea Road & Transportation Association(KRTA), Bridge Design Specifications 2010, pp. 2:1-2:42, KRTA, 2010.
  13. H. L. Cox, "The Elasticity and Strength of Paper and Other Fibrous Materials", British Journal of Applied Physics, Vol. 3, pp. 72-79, 1952. DOI: http://dx.doi.org/10.1088/0508-3443/3/3/302
  14. K. S. Ravichandran, "Elastic Properties of Two-Phase Composites", Journal of American Ceramic Society, Vol. 77, No. 5, pp. 1178-1184, 1994. DOI: http://dx.doi.org/10.1111/j.1151-2916.1994.tb05390.x
  15. M. J. Starink and S. Syngellakis, "Shear Lag Models for Discontinuous Composites: Fiber End Stresses and Weak Interface Layers", Materials Science and Engineering A, Vol. 270, pp. 270-277, 1999. DOI: http://dx.doi.org/10.1016/S0921-5093(99)00277-4
  16. C. H. Hsueh, "A Modified Analysis for Stress Transfer in Fibre-Reinforced Composites with Bonded Fibre Ends", Journal of Materials Science, Vol. 30, pp. 331-350, 1995. DOI: http://dx.doi.org/10.1007/BF00352153
  17. J. C. San Roman, Experiments on Epoxy, Polyurethane and ADP Adhesives, Technical Report No. CCLab2000.1b/1, EPFL, 2005.
  18. J. C. Afonso and G. Ranalli, "Elastic Properties of Three-phase Composites: Analytical Model based on the Modified Shear-lag Model and the Method of Cells", Composites Science and Technology, Vol. 65, pp. 1264-1275, 2005. DOI: http://dx.doi.org/10.1016/j.compscitech.2004.12.033