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http://dx.doi.org/10.9711/KTAJ.2012.14.3.247

Evaluation of tensile properties of SFRC for TBM tunnel segment  

Moon, Do-Young (경성대학교 토목공학과)
Chang, Soo-Ho (한국건설기술연구원 Geo-인프라연구실)
Bae, Gyu-Jin (한국건설기술연구원 Geo-인프라연구실)
Lee, Gyu-Pil (한국건설기술연구원 Geo-인프라연구실)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.14, no.3, 2012 , pp. 247-260 More about this Journal
Abstract
In order to reduce the amount of steel reinforcements in TBM tunnel segments, the use of Steel Fiber Reinforced Concrete(SFRC) is being tried. The steel fibers with higher aspect ratio than that used in tunnel shotcrete are preferred to compensate the deficiency in tensile strength of the segments. In this study, the tensile properties of SFRC with aspect ratio of steel fibers equal to 80 were evaluated through flexural test and Double Punch Test. In the results of flexural test, flexural strengths of the SFRC were increased about 30%~150% thanks to bond of steel fibers used to concrete and could be properly predicted by the equation proposed by Oh(2008). There was a great difference in the estimated direct tensile strengths of the SFRC by the equations presented in ACI and RILEM. It was found that the Double Punch Test could be suitable methodology to estimate the direct tensile strength presented in RILEM of the SFRC.
Keywords
Double punch test; tensile strength; SFRC;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 김상명, 신진용, 마상준, 남관우, 김기호 (2008), "숏크리트 구성재료에 따른 콘크리트 성능에 관한 실험적 연구", Vol. 10, No. 1, pp. 59-68.
2 문도영, 이규필, 장수호, 배규진 (2011), "강섬유보강 콘크리트 세그먼트의 강섬유가 표면전기저항에 미치는 영향", Vol. 13, No. 6, pp. 557-569.   과학기술학회마을
3 송용수, 류종현, 임희대 (2010), "숏크리트의 조기강도에 대한 실험적 연구", Vol. 12, No. 4, pp. 285-294.   과학기술학회마을
4 RILEM TC 162-TDF (2003), "${\sigma}-{\varepsilon}$ design method-final recommendation", Materials and Structures, Vol. 36, pp. 560-567.
5 Song, P.S., Hwang, S. (2004), "Mechanical Properties of High-Strength Steel Fiber-Reinforced Concrete", Construction and Building Materials, Vol. 18, pp. 669-673.   DOI   ScienceOn
6 Wafa, F.F., Ashour, S.A. (1992), "Mechanical Properties of High-Strength Fiber Reinforced Concrete", ACI materials Journal, Vol. 89, No. 5, pp. 449-455.
7 ASTM C 1609M (2007), "Standard test method for flexural performance of Fiber-Reinforced Concrete (Using beam with Third-Point loading)", ASTM.
8 오영훈 (2008), "갈고리형 강섬유를 혼입한 보통 힘 및 고강도 콘크리트의 휨강도 평가", 콘크리트학회논문집, Vol. 20, No. 4, pp. 531-539.
9 KS F 2405 (2005), "콘크리트의 압축강도 시험방법", 한국표준협회.
10 KS F 2566 (2010), "강섬유 보강 콘크리트의 휨인성 시험방법", 한국표준협회.
11 Chiaia, B, Fantilli, A. P., Vallini, P. (2009), "Combining fiber-reinforced concrete with traditional reinforcement in tunnel linings", Engineering Structures, Vol. 31, pp. 1600-1606.   DOI   ScienceOn
12 Cho, S.H., Karki, N.B., Cho, J.S., Waweru, R.N. (2012), "Use of Double Punch Test to Evaluate the Mechanical Performance of Fiber Reinforced Concrete", HPFRCC6, pp. 27-34.
13 Dobashi, H., Konishi, Y., Nakayama, M., Matsubara, K. (2006), "Development of steel fiber reinforced high fluidity concrete segment and application to construction", Tunneling and Underground Space Technology, Vol. 21, p. 422.   DOI   ScienceOn
14 Malatesta, S.C., Aguado, A., Molins, C., Cabrera, M. (2009), "Quality control of fiber reinforced concretes by mean of double punshing test (barcelona test)", Revista Ingenieria de Construccion, Vol. 24, No. 2, pp. 119-140.
15 Malatesta. S.C., Aguado, A., Molins, C. (2012), "Generalization of the Barcelona test for the toughness control of FRC", Materials and Structures, RILEM 2011.
16 Mangat, P.S., Gurusamy, K. (1987), "Long-term properties of steel fibre reinforced marine concrete", Materials and Structures, Vol. 20, pp. 273-282.   DOI   ScienceOn
17 Molins, C., Aguado A., Saludes, S. (2008), "Double Punch Test to control the energy dissipation in tension of FRC (Barcelona test)", Materials and Structures, Vol. 42, No. 4, p. 415.