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감수제의 감수 효율에 따른 다성분계 결합재를 사용한 콘크리트의 물리적 특성에 관한 기초적 연구

A Study on the Physical Characteristics of Concrete using Multi-Component Blended Binder According to Warter Reduction Efficiency of Warter Reduction Agent

  • 투고 : 2015.03.24
  • 심사 : 2015.08.05
  • 발행 : 2015.10.30

초록

본 연구에서는 감수제의 감수 효율에 따른 다성분계 결합재를 사용한 콘크리트의 물리적 특성에 대한 영향을 평가하기 위하여 고성능 감수제의 종류 3수준(0%, 8% 및 16%) 및 물-결합재비 3수준(40%, 45% 및 50%)에 따른 플라이애시 및 고로슬래그 미분말을 사용한 다성분계 콘크리트 배합을 제조하였다. 또한, 신뢰성 확보를 위하여 콘크리트 배합은 3회 반복실험을 실시하였다. 실험결과, 감수제 종류에 따른 압축강도는 약 20% 이상의 압축강도 차이가 발생하였으며, 감수제의 감수 효율이 콘크리트의 품질에 크게 영향을 미치는 것으로 나타났다. 따라서 감수제의 감수 효율을 반영한 다성분계 콘크리트의 압축강도 예측 모델식을 도출하였으며, 90% 이상의 높은 상관성이 있는 것으로 나타났다.

In this study, multi-component blended concrete mix with fly ash and ground granulated blast furnace slag according to 3 level of type of warter reduction agent (type of 0%, 8% and 16%) and 3 level of water-binder ratio (40%, 45% and 50%) was prepared for evaluation of effect of physical characteristics of concrete using multi-component blended binder according to warter reduction efficiency of warter reduction agent. In addition, concrete mix was carried out repetition test of three times in order to secure the reliability. As a result, compressive strength according to type of warter reduction agent was found that difference of strength was about 20% occurred, warter reduction efficiency of warter reduction agent was showed that a great influence on qualities of concrete. Therefore, reflected the effect of warter reduction efficiency of warter reduction agent, prediction model equations of compressive strength for multi-component blended concrete was proposed, it was found that more than 90% of the high correlation.

키워드

참고문헌

  1. Min, C. S., Song, Y. W., Park, J. H., Jung, Y., Choi, H. K., and Park, M. Y., Evaluation on Mechanical Properties of concrete with Replacement of Blast-Furnace Slag and Fly-Ash, Proceedings of Korea Concrete Institute, Vol.26, No.1, 2014, pp.243-245.
  2. Kim, J. K., Moon, Y. H., Uh, S. H., and Choi, E. K., The Effect of Different Curing Time and Temperature on Compressive Strength of Concrete, Journal of Korea Concrete Institute, Vol.10, No.3, 1998, pp.143-153.
  3. Kim, S. J., Application Technology of Chemical Admixture for the Implementation of a Sustainable Society, Proceedings of the Korea Institute of Building Construction, Vol.12, No.2, 2012, p.5.
  4. Park, Y. S., Nam, S. W., and Park, J. M., A Study on the Mix Design of Early Strength Concrete using Admixture, Proceedings of Korea Concrete Institute, Vol.17, No.1-2, 2005, pp.69-73.
  5. Oh, B. H., and Um, J. H., Optimum Mix Design for the Production of High Quality Concrete, Proceedings of Korea Concrete Institute, Vol.3, No.4, 1991, pp.3-15.
  6. Yoon, K. W., An Experimental Study on the Determination of Optimum Water Contents and the Ratio of Sand to Aggregate in Mix Design of Concrete, Journal of Architectural Science Association, Vol.3, No.1, 2001, pp.113-120.
  7. Yoon, S. D., and Bae, S. h., Mix Design for Quality Improvement of In-Situ Concrete, Journal of Korea Concrete Institute, Vol.7, No.2, 1995, pp.23-37.
  8. Choi, B. K., Polycarbonate-based acrylic polymer for concrete admixture, News & Information for Chemical Engineers, Vol.21, No.1, 2003, pp.74-77.
  9. Kim, K. H., Oh, S. R., Choi, W., and Choi, Y. W., A Study on the Relationship between Compressive Strength and Water-Cement Ratio According to Water Reducing Ratio, Journal of Korea Concrete Institute, Vol.26, No.8, 2014, pp.591-598. https://doi.org/10.4334/JKCI.2014.26.5.591
  10. KS F 4009, (ready-mixed concrete), 2011.
  11. KCI, Concrete structural design criteria and commentary, 2009.
  12. JIS A 5308, レディーミクストコンクリート, 2014.
  13. American Society for Testing and Materials, ASTM C 1610, Standard Test Method for Static Segregation of Self- Consolidating Concrete Using Column Technique, 2006.
  14. American Society for Testing and Materials, ASTM C 494 Standard Specification for Chemical Admixture for Concrete, 2013.
  15. Choi, J. J., and Moon, S. K., Comparison of the Concrete Mix Design Reference Tables Proposed by the ACI and KCI, Proceedings of Korea Concrete Institute, Vol.25, No.2, 2013, pp.157-158.