한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제55권3호
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  • Pages.113-121
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  • 2013
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  • 1738-3692(pISSN)
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  • 2093-7709(eISSN)
한국농공학회 (The Korean Society of Agricultural Engineers)
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나노클레이 첨가량에 따른 나노재료 시멘트 모르타르에 정착된 보강섬유의 인발성능

Pullout Performance of Reinforcing Fiber Embedded in Nano Materials Cement Mortar with Nano Clay Contents

  • 오리온 (공주대학교 일반대학원 농공학과) ;
  • 박찬기 (공주대학교 지역건설공학과)
  • 투고 : 2013.04.18
  • 심사 : 2013.05.13
  • 발행 : 2013.05.31
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초록

Recently, it has been studied for the application of nano-materials in the concrete. Applied a small amount of nano-materials can achieve the goal of high strength, high performance and high durability. The small addition of nano clay improves strength, thermal stability, and durability of concrete because of the excellent dispersion. The present study has investigated the effectiveness, when varying with the contents of nano clay, influencing the pull-out behavior of macro synthetic fibers in nano materials cement mortar. Pullout tests conducted in accordance with the Japan Concrete Institute (JCI) SF-8 standard for fiber-reinforced concrete test methods were used to evaluate the pullout performance of the different nano clay. Nano clay was added to the 0, 1, 2, 3, 4 and 5 % of cement weight. The experimental results demonstrated that the addition of nano clay led to improve the pull-out properties as of the load-displacement curve in the precracked and debonded zone. Also, the compressive strength, flexural strength and pullout performance and of Mix No. 1 and No. 2 increased up to the point when nano clay used increased by 2 and 3 % contents, respectively, but decreased when the exceeded 3 and 4 %, respectively. It was proved by verifying increase of the scratching phenomenon in macro synthetic fiber surface through the microstructure analysis on the surface of macro synthetic fiber.

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참고문헌

  1. Aly, M., M. S. J. Hashmi, A. G. Olabi, M. Messeiry, and A.I. Hussain, 2011. Effect of nano clay particles on mechanical, thermal and physical behaviours of waste-glass cement mortars. Materials Science and Engineering A 27(15): 7991-7998.
  2. Bentur, A. and S. Mindess, 1990. Fibre reinforced cementitious composites. Elsevier Applied Science, London, 1-377.
  3. Chan, Y. W. and S. H. Chu, 2004. Effect of silica fume on steel fiber bond characteristics in reactive powder concrete. Cement and Concrete Research 34(7): 1167- 1172. https://doi.org/10.1016/j.cemconres.2003.12.023
  4. Jung, J. Y., J. S. Park, and C. G. Park, 2012. Bond properties of structural polypropylene fiber in hybrid nonstructural polypropylene and structural polypropylene fiber-reinforced latex-modified cement-based composites. Journal of Applied Polymer Science 127(2): 1221-1227.
  5. Kim, D. H., J. W. Lee, and C. G. Park, 2012. Effect of mineral admixture on bond between structural synthetic fiber and latex modified cement mortar under sulfate environments. Journal of The Korean Society of Agricultural Engineers 54(5): 25-34 (in Korean). https://doi.org/10.5389/KSAE.2012.54.5.025
  6. Lee, J. W. and C. G. Park, 2012. Bond properties of structural poly vinyl alcohol fiber in cement based composites with metakaolin and silica fume contents. Journal of The Korean Society of Agricultural Engineers 54(5): 9-16 (in Korean). https://doi.org/10.5389/KSAE.2012.54.5.009
  7. Mobasher, B. and C. Y. Li, 1996. Effect of interfacial properties on the crack propagation in cementitious composites. Advanced Cement Based Materials 4(3/4): 93-105. https://doi.org/10.1016/S1065-7355(96)90078-4
  8. Morsy, M. S., S. H. Alsayed, M. Aqel, 2011. Hybrid effect of carbon nanotube and nano-clay on physicomechanical properties of cement mortar. Construction and Building Materials 25(1): 145-149. https://doi.org/10.1016/j.conbuildmat.2010.06.046
  9. Naaman, A. E., and H. Najm, 1991. Bond-slip mechanism of steel fibres in concrete. ACI Materials Journal 88(2): 135-145.
  10. Park, C. G. and J. W. Lee, 2013. Effect of nanosilica and silica fume content on the bond properties of macro-synthetic fibre in cement-based composites. Magazine of Concrete Research 65(3): 148-157. https://doi.org/10.1680/macr.12.00036
  11. Park, C. G. and J. H. Lee, 2012. Effect of styrene butadiene latex polymer contents on the bond properties of macro polypropylene fiber in polymer-modified cement-based composites. Journal of applied polymer science 126(suppl2): E330-E337. https://doi.org/10.1002/app.36909
  12. Park, C. G. and J. P. Won, 2008. Flexural performance and fire resistance of polyolefin based structural synthetic fiber reinforced concrete. Journal of The Korean Society of Agricultural Engineers 50(1): 49-57 (in Korean). https://doi.org/10.5389/KSAE.2008.50.1.049
  13. Paola Scarfato, Luciano Di Maio, Maria Letizia Fariello, Paola Russo, Loredana Incarnato, 2012. Preparation and evaluation of polymer/clay nanocomposite surface treatments for concrete durability enhancement. Cement and Concrete Composites 34(3): 297-305. https://doi.org/10.1016/j.cemconcomp.2011.11.006
  14. Shannag, M. J., R. Brinker, and W. Hansen, 1997. Pullout behavior of steel fibers from cement-based composites. Cement and Concrete Research 27(6): 925-936. https://doi.org/10.1016/S0008-8846(97)00061-6
  15. Singha, S., A. Shuklaa, and R. Brown, 2004. Pullout behavior of polypropylene fibers from cementitious matrix. Cement and Concrete Research 34(10): 1919- 1925. https://doi.org/10.1016/j.cemconres.2004.02.014