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2024 Vol.14, Issue 1 Preview Page

Scientific Paper

Evaluation of Optimal Synthetic Fiber Quantity Estimation for Synthetic Fiber-Reinforced Shotcrete for Field Applicability Assessment

합성 섬유보강 숏크리트의 현장 적용성 검토를 위한 최적 합성섬유 혼입량 평가

Kyung Suk Yoo1
,
JangTae Kim2
,
JaeSoon Choi3*
유 경석1
,
김 장태2
,
최 재순3*
1Associate Prof, Dept. of Civil & Architectural Eng. Univ. of Seokyeng
2CEO, World Engineering & Constructino Co., LTD.
3Professor, Dept. of Civil & Architectural Eng. Univ. of Seokyeng
1서경대학교 토목건축공학과 부교수(박사)
2(주)월드이앤씨 사장(박사)
3서경대학교 토목건축공학과 교수(박사)
*Corresponding Author
12 July 2024. pp. 64-73
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Abstract

Shotcrete technology has demonstrated its multifaceted benefits in tunnel applications, including slope protection, weathering prevention, stress dispersion, pressure relief, and arching effects. In response to the growing demand for enhanced flexural strength, this study investigates various fiber-reinforced shotcrete standards and compares the quality characteristics of steel, synthetic fibers, and other materials. Notably, polyethylene terephthalate (PET) fiber emerges as a promising choice due to its superior environmental performance. The research includes extensive flexural strength tests conducted at multiple sites to assess PET fiber’s suitability for practical field applications. Results indicate that PET fiber outperforms polypropylene (PP) fiber in terms of flexural toughness, constructability, and abrasion resistance. Further experiments are conducted to determine the optimal mixing rate of PET fiber, culminating in a recommended design dosage of 9 kg/m³ for effective field implementation. By evaluating the optimal quantity of PET fiber reinforcement, this study anticipates increased utilization in tunnel construction projects, thereby contributing to the advancement of fiber-reinforced shotcrete technology.

Keywords
Fiber-reinforced shotcrete
Synthetic Fiber-Reinforced Shotcrete
Polyethylene terephthalate fiber
Polyethylene terephthalate fiber-reinforced shotcrete
Optimal Quantity
Field applicability
References
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Information
  • Publisher :KOREAN ASPHALT INSTITUTE
  • Publisher(Ko) :한국아스팔트학회
  • Journal Title :Journal of the Korean Asphalt Institute
  • Journal Title(Ko) :한국아스팔트학회지
  • Volume : 14
  • No :1
  • Pages :64-73
  • Received Date : 2024-06-27
  • Revised Date : 2024-07-09
  • Accepted Date : 2024-07-09
  • DOI :https://doi.org/10.22702/jkai.2024.14.1.7
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