한국구조물진단유지관리공학회 논문집 (Journal of the Korea institute for structural maintenance and inspection)

  • 제17권5호
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  • Pages.59-66
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  • 2013
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  • 2234-6937(pISSN)
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  • 2287-6979(eISSN)
한국구조물진단유지관리공학회 (Korea Institute for Structural Maintenance Inspection)
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양생온도를 고려한 극한지용 초속경 건설재료 개발

Development Ultra Rapid Hardening Construction Materials on Cold Weather Environment Considering Curing Temperature

  • 조현우 (한국건설기술연구원 SOC성능연구소 인프라구조연구실) ;
  • 신현섭 (한국건설기술연구원 SOC성능연구소 인프라구조연구실) ;
  • 이장화 (한국건설기술연구원 SOC성능연구소 인프라구조연구실)
  • 투고 : 2013.07.10
  • 심사 : 2013.07.25
  • 발행 : 2013.09.30
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초록

한중공사에 있어서 일반 콘크리트는 영하의 기온에서 타설할 경우 양호한 경화를 얻을 수 없으며, 저온에서 동해를 방지하고 경화성을 확보하기 위하여 내한방동제를 첨가하여 사용하고 있다. 초속경 콘크리트를 한중공사에 적용할 경우 초기 급속한 발열반응을 통하여 동해를 입기 전에 소요강도를 확보할 수 있을 것으로 판단된다. 최근 연구되고 있는 마그네시아인산염복합체는 초속경성이고 저온에서도 수화반응이 가능한 것으로 보고되고 있어 새로운 극한지용 건설재료로 사용할 수 있을 것이다. 따라서 본 연구에서는 극한지용 건설재료의 개발을 위한 연구로서, 마그네시아인산염복합체를 개발하고 이 복합체를 사용한 모르타르에 대해 온도의 영향을 고려한 재료물성 평가를 실시하여 적정 배합을 제안하였다.

Because ordinary concrete cannot be hardened well under sub-zero temperatures, anti-freeze agents are typically added to prevent the frost damage and to ensure the proper hardening of concrete. With the advantage of a rapid exothermic reaction property, jet set concrete may be used as a cold weather concrete because it can reach the required strength before being damaged by cold weather. Recent studies are reported that magnesia-phosphate composites can be hardened very quickly and hydrated even in low temperature, which can be used as an alternative of severe cold weather concrete in arctic regions. This study developed the magnesia-phosphate composites that can be used in severe cold regions and suggested an appropriate mixture design from the experimental results.

키워드

참고문헌

  1. An, M. Y., The Properties of Ultra Rapid Hardening Mortar for Repair using Magnesia-Phosphate Cement, Konkuk University, 2008, pp.25-28 (in Korean).
  2. Cho, H. W., Kang, S. T., Shin, H. S., Lee, J. H., Fundamental Properties of Magnesia-Prosphate Composite Considering Mix Conditionsand Curing Temperature, Journal of the Korea Institute for Structural Maintenance and Inspection, Vol. 16, No. 6, 2012, pp.163-170 (in Korean). https://doi.org/10.11112/jksmi.2012.16.6.163
  3. Choi, H., Choi, J. O., Song, M. S., Moon, C. Y., "The application of Phosphate Magnesia Cement for Solidification of Soil", Korea Concrete Institute, Vol. 20, No. 2, 2008, pp.533-536 (in Korean).
  4. Hall, D. A. and Stevens, R., Jazairi, B. E., "Effect of Water Content on the Structure and Mechanical Properties of Magnesia-Phosphate Cement Mortar", Journal of American Ceramic Society, Vol. 81, No. 6, 1998, pp.517-526.
  5. Jazairi, B. E., "The Properties of Hardened MPC Mortar and Concrete Relevant to the Requirement of Rapid Repair of Concrete Pavement", Concrete Repair. 9, 1987, pp.25-31.
  6. Kang, I. S., Kwon, M. O., Jang, H. J., An, M. Y., Paik, M. S., Jung, S. J., "A Study on the Basic Properties of Repair Mortar Using Magnesia-Phosphate Cement", Korea Concrete Institute, Vol. 19, No. 1, 2007, pp.751-754 (in Korean).
  7. Kim, S. B., Lee, D. H., "Behaviours of Concrete an Very Low Temperatures", Korea Concrete Institute, Vol. 9, No. 4, 2007, pp.31-41 (in Korean).
  8. Kim, K. M., Won, C., Kim, G. C., Oh, S. K., Han, C. G., "A Fundamental Study on the Effectiveness of Cold Weather Concreting Using Anti-freeze Agent and Insulating Form", Korea Concrete Institute, Vol. 13, No. 1, 2001, pp.913-918 (in Korean).
  9. Kim, Y. J., Lee, S. S., Won, C., Park, S. J., "A Study on the Strength Properties and the Temperature Curve of Winter Concrete According to the Difference of Curing Method in Mock-up Test", Korea Concrete Institute, Vol. 15, No. 4, 2003, pp.541-548 (in Korean). https://doi.org/10.4334/JKCI.2003.15.4.541
  10. Park, S. J., Kim, D. S., Won, C., Lee, S. S., Kim, Y. J., "A Study on the Freezing and Strength Properties of Cement Mortar using Accelerators for Freezing Resistance", Korea Concrete Institute, Vol. 12, No. 2, 2000, pp.1267-1272 (in Korean).
  11. Popovics, S., Rajendran, N., penko, M., "Rapid Hardening Cememts for Repair of Concerte", ACI Materials Journal 1-2, 1987, pp.64-73.
  12. Sugama, T., Kukacka, L. E., "Charactaristics of Magnesium Polyphosphate Cement Derived From Ammonuim Polyphosphate Solution", Cement and Concrete Research 13, 1983, pp.499-506. https://doi.org/10.1016/0008-8846(83)90008-X
  13. Sugama, T., Kukacka, L. E., "Magnesium Monophosphate Cement Derived From Diammonuim Phosphate Solution", Cement and Concrete Research 13, 1983, pp.407-416. https://doi.org/10.1016/0008-8846(83)90041-8

피인용 문헌

  1. A Fundamental Experiment on Preventing Frost Damage at Early Age of Mortar in Low Temperature using Reduction Slag vol.16, pp.1, 2016, https://doi.org/10.5345/JKIBC.2016.16.1.001
  2. 저온(-5℃)에서의 환원슬래그 및 석고가 콘크리트에 미치는 영향에 관한 실험적 연구 vol.17, pp.3, 2017, https://doi.org/10.5345/jkibc.2017.17.3.279
  3. 환원슬래그 및 재생석고를 사용한 동절기용 콘크리트 개발 vol.15, pp.4, 2013, https://doi.org/10.14190/mrcr.2020.15.4.064