한국지진공학회논문집 (Journal of the Earthquake Engineering Society of Korea)

  • 제25권1호
  • /
  • Pages.21-32
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  • 2021
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  • 1226-525X(pISSN)
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  • 2234-1099(eISSN)
한국지진공학회 (Earthquake Engineering Society of Korea)
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강섬유보강 모르타르 바름에 의한 콘크리트 조적 프리즘의 압축 및 사인장 강도 증진 효과

Enhancement of Compressive and Shear Strength for Concrete Masonry Prisms with Steel Fiber-Reinforced Mortar Overlay

  • 유지훈 (인천대학교 일반대학원 건축학과) ;
  • 명성진 (인천대학교 일반대학원 건축학과) ;
  • 박지훈 (인천대학교 도시건축학부)
  • Yu, Ji-Hoon (Department of Architecture, Incheon National University) ;
  • Myeong, Seong-Jin (Department of Architecture, Incheon National University) ;
  • Park, Ji-Hun (Division of Architecture and Urban Design, Incheon National University)
  • 투고 : 2020.10.15
  • 심사 : 2020.12.01
  • 발행 : 2021.01.01
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초록

Concrete masonry prisms are strengthened with steel fiber-reinforced mortar (SFRM) overlay and tested for compressive and diagonal tension strength. Masonry prisms are produced in poor condition considering standard workmanship for masonry buildings in Korea. Amorphous steel fibers are adopted for SFRM, and appropriate mixing ratios of SFRM are derived considering constructability and strength. Masonry prisms are strengthened with different fiber volume ratios, while numerous strengthened faces and additional reinforcing meshes are produced for compression and diagonal tension tests. Compression and diagonal tension strength are increased by up to 122% and 856%, respectively, and the enhancement effect for diagonal tension strength was superior compared to compression strength. Finally, the test results and strength prediction equations based on existing literature and regression analysis are compared.

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과제정보

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었음(과제번호 20CTAP-C152105-02).

참고문헌

  1. Yu HR, Kwon KH. A study on mechanical characteristics of masonry structure constructed by clay brick with lime mortar. Journal of the Korea Institute for Structural Maintenance and Inspection. 2011 Jul;15(4):87-98. https://doi.org/10.11112/jksmi.2011.15.4.087
  2. Kim HC, Kim KJ, Park JH, Hong WK. Experimental study on the material properties of unreinforced masonry considering earthquake load. EESK J. Earthquake Eng. 2001 Apr;5(2):93-101.
  3. Yang KH, Lee YJ, Hwang YH. Evaluation of stress-strain relationship by diagonal tension of masonry assemblages. Journal of the Korea Concrete Institute. 2019 Dec;31(6):537-544. https://doi.org/10.4334/jkci.2019.31.6.537
  4. Choi HK, Park BK, Bae BI, Choi CS. Lateral resistance of unreinforced masonry walls retrofitted with ECC. Journal of th Architectural Institute of Korea Structure & Construction. 2010 Dec;26(12):3-10.
  5. Taghdi M, Bruneau M, Saatcioglu M. Seismic retrofitting of low-rise masonry and concrete walls using steel strips. ASCE. Journal of Structural Engineering. 2000 Sep;126(9):1017-1025. https://doi.org/10.1061/(ASCE)0733-9445(2000)126:9(1017)
  6. Ismail N, Petersen RB, Masia MJ, Ingham JM. Diagonal shear behavior of unreinforced masonry wallettes strengthened using twisted steel bars. Construction and building materials. 2011 Dec; 25(12):4386-4393. https://doi.org/10.1016/j.conbuildmat.2011.04.063
  7. Darbhanzi A, Marefat MS, Khanmohammadi M. Investigation of in-plane seismic retrofit of unreinforced masonry walls by means of vertical steel ties. Construction and building materials. 2014 Feb; 52:122-129. https://doi.org/10.1016/j.conbuildmat.2013.11.020
  8. Angelo D, Marco M, Andrea C. Experimental investigation on polymerci net-RCM reinforced masonry panels. Composite structures. 2013 Nov;105:207-215. https://doi.org/10.1016/j.compstruct.2013.05.017
  9. Almeida JAPP, Pereira ENB, Barros JAO. Assessment of overlay masonry strengthening system under in-plane monotonic and cyclic loading using the diagonal tensile test. Construction and building materials. 2015 Sep; 94:851-865. https://doi.org/10.1016/j.conbuildmat.2015.07.040
  10. Yu JH, Park JH. Investigation of steel fiber-reinforced mortar overlay for strengthening masonry walls by prism tests. Applied Sciences. 2020 Aug;10(18).
  11. Ku DO, Kim SD, Kim HS, Choi KK. Flexural performance characteristics of amorphous steel fiber-reinforced concrete. Journal of the Korea Concrete Institute. 2014 Aug;26(4):483-489. https://doi.org/10.4334/JKCI.2014.26.4.483
  12. Korean Standards Association. KS L 5111: Flow Table for Use in Tests of Hydraulic Cement. Korean Standards Association. c2017.
  13. Korean Standards Association. KS L 5105: Testing Method for Compressive Strength of Hydraulic Cement Mortars. Korean Standards Association. c2017.
  14. Korean Standards Association. KS L 5104: Testing Method for Tensile Strength of Hydraulic Cement Mortars. Korean Standards Association. c2017.
  15. Kim HY, Kim GY, Jeon YS, Nam JS, Lee TG, Hroyuki M. The experimental study on the blast resistance evaluation of fiber reinforced mortar. In The Regional Association of Architectural Institute of Korea fall workshop. c2010. p.451-454.
  16. ASTM C1314. Standard Test Method for Compressive Strength of Masonry Prisms. ASTM International: West Conshohocken. 2014.
  17. ASTM E519/E519M. Standard Test Method for Diagonal Tension (Shear) in Masonry Assemblages. ASTM International: West Conshohocken. c2015.
  18. American Society of Civil Engineers. ASCE 41-17 Seismic Evaluation and Retrofit of Existing Buildings. c2017.
  19. KCS 41 34 02: Bricklayers Work; Ministry of Land, Infrastructure and Transport. Korea Construction Standards. c2018.
  20. Yi W.H, Lee JH, Kang DW, Yang WJ. An experimental study on material characteristics of brick masonry. Journal of the Architectural institute of Korea. 2004 Dec;20(12):45-52.
  21. National Disaster management Research institute. Study on Seismic Retrofitting Techniques for Unreinforced Masonry Buildings. c2009.
  22. Korean Standards Association. KS F 4004: Concrete Bricks. Korean Standards Association. c2018.
  23. KCS 41 16 01. Plaster Work; Ministry of Land, Infrastructure and Transport. Korea Construction Standards. c2018.
  24. KCS 41 16 02. Cement Mortar Plastering; Ministry of Land, Infrastructure and Transport. Korea Construction Standards. c2018.
  25. Shabdin M, Zargaran M, Attari NKA. Experimental diagonal tension (shear) test of un-reinforced, masonry (URM) walls strengthened with textile reinforced mortar (TRM). Construction and building materials. 2017 Mar;164:704-715. https://doi.org/10.1016/j.conbuildmat.2017.12.234
  26. Sagar SL, Singhal V, Durgesh CR, Gudur P. Diagonal shear and out-of-plane flexural strength of fabric-reinforced cementitious matrix-strengthened masonry wallets. ASCE. Journal of Composites for Construction. 2017 Aug;21(4):405-415.
  27. Architectural Institute of Korea. Korean Building Code 2016. 2016.
  28. ACI Committee 549. Guide to Design and Construction of Externally Bonded Fabric-Reinforced Cementitious Matrix (FRCM) Systems for Repair and Strengthening Concrete and Masonry Structures (ACI 549.4R-13); American Concrete Institute: Farmington Hills, MI, USA. c2013.
  29. T. Li, Galati N, Tumialan, JG, Nanni A. Analysis of unreinforced masonry concrete walls strengthened with glass fiber-reinforced polymer bars. ACI Structural. J. 2005 Jul;102(4):569-577.
  30. Sagar SL, Singhal V, Durgesh CR, Gudur P. Diagonal shear and out-of-plane flexural strength of fabric-reinforced cementitious matrix-strengthened masonry wallets. ASCE. Journal of Composites for Construction. 2017 Aug;21(4):405-415.