Journal of the Korea Concrete Institute (콘크리트학회논문집)

Korea Concrete Institute (한국콘크리트학회)
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An Experimental Study on Fundamental Quality Properties of Basalt Fiber Reinforced Mortar according to Application of High Volume Fly Ash

바잘트 섬유보강 모르타르의 하이볼륨 플라이애시 적용에 따른 기초 품질 특성에 관한 실험적 연구

  • Received : 2015.10.13
  • Accepted : 2016.06.20
  • Published : 2016.08.31
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Abstract

This study was evaluated that fundamental quality properties in the mortar level, as part of a basic study for development of fiber reinforced concrete using basalt fiber. Mortar mixtures used in the experiments used the mortar using cement only and high volume fly ash mortar using fly ash of 50%, was evaluated by comparison. As a experiments results, high volume fly ash mortar using 50% fly ash was effective for improving fiber dispersibility than mortar using cement only, accordingly, it showed that fiber aggregation phenomenon has been greatly reduced. In addition, if the fly ash used much more than 50%, the compressive strength has been shown to decrease of about 30%, fiber length and mixing ratio of basalt fiber was found to have a greater effect on flow properties than mechanical properties.

본 연구에서는 바잘트 섬유보강 콘크리트의 개발을 위한 일환의 기초적 연구로서, 바잘트 섬유 혼합에 따른 기초 품질 특성을 모르타르 수준에서 평가하였다. 실험에 사용된 모르타르 배합은 시멘트만을 사용한 배합과 플라이애시를 50% 혼합한 하이볼륨 플라이애시 배합을 사용하였으며, 비교하여 평가하였다. 실험결과, 플라이애시를 50% 혼합한 하이볼륨 플라이애시 모르타르는 시멘트만 사용한 모르타르보다 섬유 분산성을 향상시키는 효과가 있는 것으로 나타났으며, 섬유 뭉침현상이 상당히 감소되는 것으로 나타났다. 또한 플라이 애시를 50% 이상 다량 사용할 경우, 압축강도는 약 30%의 감소하는 것으로 나타났으며, 바잘트 섬유의 섬유 길이 및 혼합량은 역학적 특성보다 유동 특성에 더 큰 영향을 미치는 것으로 나타났다.

Keywords

References

  1. Kim, J. M., and Kim, K. N., Basalt of Cheorwon, and Industrial Fibers, Research Institute for Gangwon, Reports of Policy, pp.1-11, 2011. 10.
  2. IPCC, Climate Change 2007-Synthesis Report, Intergovernmental Panel on Climate Change, 2007.
  3. Im, N., P., Characteristics of Bending Stress Corrosion Cracking of Basalt Fiber Reinforced Composite Materials by Different Fabrication Methods, Master's Thesis, Korea Maritime and Ocean University, 2013.
  4. Cory Higha, Hatem M. Seliemb, Adel El-Saftyc, and Sami H. Rizkallaa, "Use of Basalt Fibers for Concrete Structures, Journal of Construction and Building Materials," pp.37-46, 2015.
  5. Choi, Y.W., Chu, S.B., Park, M.S., Kim, J.H., Kim, T.H., and Kim, K.H. "The Effect of HVFA on the Reduction of Unit Water of Concrete," Proceedings of Korean Recycled Construction Resource Institute, Vol.12, No.1, pp.176-179, 2012, 4.
  6. Korea Conformity Laboratories, Development & Commercialization of Green Construction Materials utilizing High Volume Coal Combustion Products, Korea Conformity Laboratories, 2011.
  7. Lee, S. H., Kim, H.J., Etsuo Sakai, and Masaki Daimon, "Effect of Particle Size Distribution of Fly ash-Cement System on the Fluidity of Cement Pastes," Cement and Concrete Research, Vol.33, Issue 2, pp.763-768, 2003, 2. https://doi.org/10.1016/S0008-8846(02)01054-2
  8. P. Kumar Mehta, High-Performance, High-Volume Fly Ash Concrete for Sustainable Development, International Workshop on Sustainable Development and Concrete Technology, 2004.
  9. Kim, S. S., Choi, S. J., and Jeong, Y., An Experimental Study on the Strength Development Properties of HVFA Concrete by Fly-ash Replacement Ratio, Proceeding of Korea Concrete Institute, Vol.21, No.2, pp.279-280, 2009, 11.
  10. Choi, Y. W., Park, M. S., Choi, B. K., and Oh, S. R., "The Properties of Strength Development of High Volume Fly Ash Concrete with Reduction of Unit Water Content," Journal of the Korea Recycled Construction Resources Institute, Vol.2, No.1, pp.46-51, 2014. 3. https://doi.org/10.14190/JRCR.2014.2.1.046
  11. Choi, Y. W., Oh, S. R., Park, M. S., and Choi, B. K., "The Experimental Study on the Fluidity Properties of Mortar Using Basalt Fiber and High Volume Fly Ash," Journal of the Korea Recycled Construction Resources Institute, pp.345-353, 2014.
  12. Jeon, S. H., and Kim, H. D., "Physical Properties of Basalt Chopped Fiber Reinforced Cement Composite," Journal of The Korea Academia-Industrial Cooperation Society, Vol.10, No.6, pp.1298-1303, 2009. 6. https://doi.org/10.5762/KAIS.2009.10.6.1298
  13. Jo, J. H., A Study on the Quality Properties of Multi Component Blended High Fluidity Concrete with $CO_2$ Reduction, master's thesis of Semyung University, 2015.