Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
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Performance of Railway Roadbed Reinforced by Acrylate in Laboratory Experiment

실내실험을 통한 아크릴레이트의 철도노반 보강 성능

  • Yoon, Hwan-Hee (Dept. of Railroad Construction and Safety Engineering, Dongyang University) ;
  • Son, Min (Dept. of Civil Engineering, Korea International University in Ferghana) ;
  • Kim, Jin-Hwan (Dept. of Railroad Construction and Safety Engineering, Dongyang University) ;
  • Kim, Dong-Hyun (Dept. of Railroad Construction and Safety Engineering, Dongyang University) ;
  • Kim, Byung-Hyun (School of Architectural, Civil, Environmental and Energy Engineering, Kyungpook National University) ;
  • Jung, Hyuk-Sang (Dept. of Railroad Construction and Safety Engineering, Dongyang University)
  • Received : 2020.06.15
  • Accepted : 2021.02.03
  • Published : 2021.03.30
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Abstract

This paper deals with the reinforcement performance of acrylate for reinforcing the settled railway roadbed. Concrete tracks have the advantage of reducing track maintenance costs and high resistance to track destruction. However, roadbed settlement is occurring in some construction sections, and the safety of railways is a serious concern because of difficulties in maintenance. Currently, maintenance through the track restoration method is being carried out in Korea as a way of roadbed settlement in concrete tracks, but continuous re-settlement can occur because the roadbed itself cannot be reinforced, and there are very few cases of reinforcement of railway roadbeds and field application. So the development of reinforcement materials and construction methods to reinforce railway roadbeds is required. Therefore, in this paper, acrylate was selected as reinforcement material for railway roadbed, and the reinforcement performance of acrylate was analyzed through experiment. As a result, it was analyzed that the acrylate can penetrate into a permeability coefficient of 1×10-4 cm/sec, and secure uniaxial compression strength of 0.5 MPa/30min or more and stiffness of 80 MPa or more.

본 논문에서는 침하된 철도노반 보강을 위한 아크릴레이트의 보강 성능에 대한 내용을 다루었다. 콘크리트궤도는 궤도유지보수 비용의 절감과 궤도파괴에 높은 저항력을 가지는 장점이 있다. 하지만 최근 콘크리트궤도에서의 노반침하가 발생하고 있고, 이에 대한 유지보수에 어려움을 겪고 있기 때문에 철도 운행에 안전이 우려되고 있다. 현재 국내에서는 콘크리트궤도의 노반침하에 대한 방안으로 궤도복원공법을 통한 유지보수를 시행중에 있지만 노반 자체를 보강할 수 없기 때문에 지속적인 재침하가 발생할 수 있으며, 철도노반 보강에 대한 연구 및 현장적용 사례는 극히 드물어 철도노반을 보강하기 위한 보강재료 및 공법의 개발이 요구된다. 따라서 본 논문에서는 철도노반의 보강재료로 아크릴레이트 약액을 선정하였으며, 실내실험을 통해 아크릴레이트 약액의 보강성능을 분석하였다. 그 결과 1×10-4cm/sec 투수계수에 침투가 가능하며, 일축압축강도 0.5MPa/30min, 강성 80MPa 이상 확보하는 것으로 분석되었다.

Keywords

Acknowledgement

This research was supported by the Railway Technology Research Project of the Ministry of Land, Infrastructure and Transport through the assignment of the "Development of a Track Condition Assessment System and Maintenance Technology for Preemptive Failure Prevention and Efficient Management (19RTRP-B113566-04)."

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