최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기한국구조물진단유지관리공학회 논문집 = Journal of the Korea Institute for Structural Maintenance and Inspection, v.22 no.3, 2018년, pp.103 - 110
홍기남 (충북대학교 토목공학과) , 이수규 (충북대학교 토목공학과) , 한상훈 (충북대학교 토목공학과) , 강판승 (충북대학교 토목공학과)
The long-term flexural behavior of reinforced concrete (RC) beams strengthened with an iron based-shape memory alloys (Fe-SMAs) by a near-surface mounted (NSM) method was evaluated. The pre-strained values of 2% and 4% and introduced prestressing force by an activation of a shape memory effect of th...
* AI 자동 식별 결과로 적합하지 않은 문장이 있을 수 있으니, 이용에 유의하시기 바랍니다.
핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
강판보강공법이란? | 외부에 강판을 부착하여 보강하는 강판보강공법과 섬유시트로 보강하는 섬유보강공법은 구조물의 내구력을 복원시키고 강성을 증가시키는 대표적인 보강 공법이다(Loreto et al., 2013;Elsanadedy et al. | |
철근콘크리트 구조물의 문제점에 따른 해결책은? | 하지만, 철근콘크리트로 건설된 구조물의 내구력은 시간경과에 따른 노후화와 외부요인에 의한 손상으로 저하되게 된다. 이에 따른 해결책으로, 구조물 보강에 관한 많은 연구와 적용이 이루어지고 있다(Triantafillou and Plevris, 1992; Chajes et al., 1994; Norris et al. | |
강판보강공법의 문제점은? | , 2013). 하지만, 강판보강공법의 경우 부식, 강판 자중에 의한 사하중 증가 및 취급의 어려움 등의 문제점을 나타내고 있으며, 섬유보강공법의 경우 부착재로 사용되는 에폭시와 콘크리트 모체의 상이한 열팽창계수로 인한 계면의 부착력 저하 및 보강재 박리 등의 한계점을 가지고 있다. 또한 에폭시의 낮은 유리전이온도로 인해 낮은 내화성능을 가지고 있다 (Kim, 2005; Park, 2003; Choi et al. |
ASTM C1329 / C1329M-16a, Standard Specification for Mortar Cement, ASTM International, West Conshohocken, PA, 2016.
Bilotta, A., Ceroni, F., Nigro, E., and Pecce, M. (2015), Efficiency of CFRP NSM strips and EBR plates for flexural strengthening of RC beams and loading pattern influence. Composite Structures, 124, 163-175.
Chajes, M. J., Thomson Jr, T. A., Januszka, T. F., and Finch Jr, W. W. (1994), Flexural strengthening of concrete beams using externally bonded composite materials. Construction and Building Materials, 8(3), 191-201.
Chin, S. C., Tong, F. S., Doh, S. I., Gimbun, J., Foo, Y. K., and Siregar, J. P. (2018), Potential External Strengthening of Reinforced Concrete Beam Using Natural Fiber Composite Plate. In Applied Mechanics and Materials (Vol. 878, pp. 41-48), Trans Tech Publications.
Choi, H. T., West, J. S., and Soudki, K. A. (2010), Effect of partial unbonding on prestressed near-surface-mounted CFRP-strengthened concrete T-beams. Journal of Composites for Construction, 15(1), 93-102.
De Lorenzis, L., Rizzo, A., and La Tegola, A. (2002), A modified pull-out test for bond of near-surface mounted FRP rods in concrete. Composites Part B: Engineering, 33(8), 589-603.
ElHacha, R., Wight, R. G., and Green, M. F. (2001), Prestressed fibrereinforced polymer laminates for strengthening structures. Progress in Structural Engineering and Materials, 3(2), 111-121.
El-Hacha, R., and Gaafar, M. (2011), Flexural strengthening of reinforced concrete beams using prestressed, near-surfacemounted CFRP bars. PCI journal, 56(4).
El-Hacha, R., and Rizkalla, S. H. (2004), Near-surface-mounted fiber-reinforced polymer reinforcements for flexural strengthening of concrete structures. Structural Journal, 101(5), 717-726.
Elsanadedy, H. M., Almusallam, T. H., Alsayed, S. H., and Al-Salloum, Y. A. (2013), Flexural strengthening of RC beams using textile reinforced mortar-Experimental and numerical study. Composite Structures, 97, 40-55.
Kim, H. J., and Kim, W. (2005), Premature Failure Load of Reinforced Concrete Beams with Flexural Strengthened by Steel Plates. Journal of the Korea institute for structural maintenance and inspection, 9(1), 283-292.
KS (2010), Standard Test Method for Compressive Strength of Concrete, KS F 2405, Korean Standard Institute, Korea (in Korean).
Lee, W. J., Weber, B., Feltrin, G., Czaderski, C., Motavalli, M., and Leinenbach, C. (2013), Phase transformation behavior under uniaxial deformation of an Fe-Mn-Si-Cr-Ni-VC shape memory alloy. Materials Science and Engineering: A, 581, 1-7.
Loreto, G., Leardini, L., Arboleda, D., and Nanni, A. (2013), Performance of RC slab-type elements strengthened with fabricreinforced cementitious-matrix composites. Journal of Composites for Construction, 18(3), A4013003.
Miller, D. A., and Lagoudas, D. C. (2001), Influence of cold work and heat treatment on the shape memory effect and plastic strain development of NiTi. Materials Science and Engineering: A, 308(1-2), 161-175.
Norris, T., Saadatmanesh, H., and Ehsani, M. R. (1997), Shear and flexural strengthening of R/C beams with carbon fiber sheets. Journal of structural engineering, 123(7), 903-911.
Park, J. Y. (2003), "Behavior characteristics and strengthening design of reinforced concrete beam strengthened with carbon fiber reinforced polymer plate," Ph.D. Thesis, Chungbuk University, Cheongju, Republic of Korea. 1-3.
Sato, A., Chishima, E., Soma, K., and Mori, T. (1982), Shape memory effect in ${\gamma}$ ? ${\alpha}$ transformation in Fe-30Mn-1Si alloy single crystals. Acta Metallurgica, 30(6), 1177-1183.
Sim, J., and Park, C. (2005), Characteristics of basalt fiber as a strengthening material for concrete structures. Composites Part B: Engineering, 36(6-7), 504-512.
Triantafillou, T. C., and Plevris, N. (1992), Strengthening of RC beams with epoxy-bonded fibre-composite materials. Materials and Structures, 25(4), 201-211.
Yeon Y. (2017), Evaluation of Prestressing Effect for Fe-based Shape Memory Alloy, MS.c Thesis, Chungbuk National University
※ AI-Helper는 부적절한 답변을 할 수 있습니다.