대한건축학회논문집:구조계 (Journal of the Architectural Institute of Korea Structure & Construction)

  • 제28권6호
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  • Pages.59-66
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  • 2012
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  • 1226-9107(pISSN)
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  • 2384-1788(eISSN)
대한건축학회 (Architectural Institute of Korea)
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비정질 강섬유 보강 콘크리트의 건조수축 균열평가모델

A Prediction Model of Shrinkage Cracking of Steel Fiber Reinforced Concrete

  • 투고 : 2011.10.18
  • 발행 : 2012.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

On the basis of dry shrinkage tests of fiber reinforced concrete performed in the previous study, an analytical model was developed to predict the cracking time of concrete in ring test. Due to the geometrical characteristics of the ring type restrained shrinkage test, differential shrinkage causes complex tensile stress in concrete ring. For simplicity in application, the ring test specimens were idealized as linear specimens and the degree of restraint was defined considering displacement compatibility between steel and concrete rings. The tensile stress in ring test specimens was also defined using elastic modulus of concrete and free dry shrinkage strain. The tensile strength of concrete was derived from CEB-FIP model based on flexural test results. In the proposed model, cracking development tine is determined at the intersection between tensile stress and tensile strength curves of concrete ring. Compared with existing test results the proposed model shows reliable prediction of the crack development time.

키워드

과제정보

연구 과제 주관 기관 : (재)포항산업과학연구원

참고문헌

  1. Hameed R., Turatsinze A., Duprat F., and Sellier A., "Metallic fiber reinforced concrete: Effect of fiber aspect ratio on the flexural properties", ARPN Jouurnal of engineering and applied science Vol. 4 No. 5, 2009, pp. 67-72.
  2. H. Oucief, M.F. Habita, B. Redjel, "Hybrid fiber reinforced self-compacting concrete: hardened properties", International Journal of civil engineering, Vol. 4, No. 2, 2006, pp. 77-85.
  3. 한국 표준협회, KS F 2595, "콘크리트의 건조 수축 균열 시험방법", 2009
  4. 미국 도로교통협회, AASHTO PP34-99, "Estimating the Cracking Tendency of Concrete", 2005
  5. 미국 표준협회, ASTM C 1581-04, "Standard Test Method for Determining Age at Cracking and Induced Tensile Stress Characteristics of Mortar and Concrete under Restrained Shrinkage", 2004
  6. Miroslaw Grzybowski, Surendra P. Shah, "Shrinkage cracking of fiber reinforced concrete", ACI Material Jounal, Vol. 87, No. 2, 1990, pp. 138-148.
  7. Heather T. See, Emmanuel K. Attiogbe, and Matthew A. Miltenberger, "Shrinkage Cracking Characteristics of Concrete Using Ring Specimens", ACI Materials Journal, Vol. 100, No. 3, 2003, pp. 239-245.
  8. Jae Heum Moon, Jason Weiss, "Estimating residual stress in the restrained ring test under circumferential drying", Cement and Concrete Composites, Vol. 28, 2006, pp. 486-496. https://doi.org/10.1016/j.cemconcomp.2005.10.008
  9. Jae-Heum Moon, Farshad Rajabipour, Brad Pease, Jason Weiss, "Quantifying the Influence of Specimen Geometry on the Results of the Restrained Ring Test", Journal of ASTM International, Vol. 3, No. 8, 2006, pp. 1-14.
  10. Akhter B. Hossain, Jason Weiss, "Assessing residual stress development and stress relaxation in restrained concrete ring specimens", Cement and Concrete Composites Vol. 26, 2004, pp. 531-540. https://doi.org/10.1016/S0958-9465(03)00069-6
  11. Akhter B. Hossain, Jason Weiss, "The role of specimen geometry and boundary conditions on stress development and cracking in the restrained ring test", Cement and Concrete Composites 36, 2006, pp. 189-199. https://doi.org/10.1016/j.cemconres.2004.06.043
  12. Choi H., "Shrinkage Cracking Characteristics of Micro Steel Fiber Reinforced Concrete", Soongsil Univ., Seoul, Korea, 2010, pp. 22-28
  13. 미국 표준협회, ASTM C 1609-07, "Standard Test Method for Flexural Performance of Fiber-Reinforced Concrete (Using Beam With Thrid-Point Loading)", 2007
  14. 한국 표준협회, KS F 2424, "모르타르 및 콘크리트의 길이 변화 시험방법", 2010
  15. CEB-FIP MC 90, Design of concrete structures, CEB-FIP model-code 1990, Thomas Telford, 1993, pp. 437
  16. Fletcher, R., and Reeves, C.M., Computer J., Vol. 7, 1964, pp.149-154 https://doi.org/10.1093/comjnl/7.2.149
  17. American Concrete Institute, "Building Code Requirements for Structural Concrete" ACI Committee 318-08, 2008
  18. Surendra P. Shah, Chengsheng Ouyang, Shashidhara Marikunte, Wei Yang, Emilie Becq-Giraudon, "A method to predict shrinkage cracking of concrete", ACI Material Journal, Vol. 95, No. 4, 1998, pp. 339-346.
  19. Alexandra Passuello, Giacomo Moriconi, Surendra P. Shah, "Cracking behavior of concrete with shrinkage reducing admixtures and PVA fibers", Cement and Concrete Composites 31, 2009, pp. 699-704 https://doi.org/10.1016/j.cemconcomp.2009.08.004