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2022 Vol.21, Issue 4 Preview Page

Research Article

Strength and Durability Test of Rapid Hardening Composite Mat for Protect Railway Slope in Operation

운영중인 철도비탈면 보호를 위한 초속경 복합매트의 강도 및 내구성 실험

Hyun-Sang Yoo1
,
Tae-Hee Kang2
,
Hyuk-Sang Jung3*
,
In-Chul Back4
유 현상1
,
강 태희2
,
정 혁상3*
,
백 인철4
1Nonmember, Senior Manger, Dept. of Audit&Inspection, 240 Jungang-ro, Dong-gu, Deajun 34618, Republic of Korea
2Nonmember, Graduate Student (Master Course), Dept. of Railroad Construction and Safety Engineering, Dongyang University, 145 Dongyangdae-ro, Punggi-eup, Yeongju-si, Gyeongsangbuk-do 36040, Republic of Korea
3Member, Professor, Dept. of Railroad Construction and Safety Engineering, Dongyang University, 145 Dongyangdae-ro, Punggi-eup, Yeongju-si, Gyeongsangbuk-do 36040, Republic of Korea
4Nonmember, Senior Research, Dept. of Technology Reserch, 240 Jungang-ro, Dong-gu, Deajun 34618, Republic of Korea
*Corresponding Author
30 December 2022. pp. 79-91
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Abstract

Recently, the frequency of damage to slopes for highways, railways, and complexes has been increasing according to abnormal climates such as heavy rainfall or snowfall. Rapid Hardening Composite Mat (RHCM) could be a satisfactory alternative because it has the advantages that large-scale earthwork is not essential and the period for restoration is minimized. Also, this method does not require heavy machines and a phase of maintenance for slopes against the shotcrete method or planted slope protection, which are representative slope protection methods. Furthermore, the curing time is shorter than Geosynthetic Concrete Composite Mat (GCCM). Therefore, RHCM could be useful for emergency restoration work. Thus, in this study, the strength and duration of RHCM are estimated, compared, and analyzed with GCCM. As a result of the laboratory test, the strength of RHCM is greater 51%, and the duration is larger 69% than GCCM.

Keywords
Railway slope
Rapid hardening composite mat
Formation level
Rapid construction backfill
Emergency restoration

최근 폭우, 폭설 등과 같은 이상기후로 인해 도로, 철도 및 단지에 적용된 비탈면의 국부적 파괴 또는 손상 빈도가 점차 증가하고 있다. 초속경 복합매트(Rapid Hardening Composite Mat, RHCM)은 대규모 토공이 불필요하고 수해복구시간을 최소화할 수 있는 장점이 있어 대안으로 고려될 수 있다. RHCM은 대표적인 비탈면 보호공법인 숏크리트 공법 및 식생공 공법에 비해 중장비 설비가 불필요하고 유지관리가 용이하며, 기존 Geosynthetic Concrete Composite Mat(GCCM)에 비해 경화시간이 짧아 긴급복구가 가능하다는 장점이 있다. 따라서, 본 연구에서는 실내시험을 통해 RHCM의 강도 및 내구성을 측정하고 GCCM과 비교·분석하였다. 실내시험 결과 RHCM의 강도는 기존 GCCM에 비해 약 51% 높은 것으로 나타났으며, 내구성 또한 69% 높은 것으로 나타났다.

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 21
  • No :4
  • Pages :79-91
  • Received Date : 2022-11-23
  • Revised Date : 2022-12-09
  • Accepted Date : 2022-12-19
  • DOI :https://doi.org/10.12814/jkgss.2022.21.4.079
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