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다량의 혼화재를 사용한 고강도 콘크리트의 역학적 특성

Mechanical Properties of High Strength Concrete with High Volume Mineral Admixture

  • 투고 : 2014.07.21
  • 심사 : 2014.09.25
  • 발행 : 2014.09.30

초록

본 연구에서는 시멘트 사용량을 저감하고 다량의 혼화재를 사용하여 고강도 콘크리트 제조 과정에서 시멘트에 의한 $CO_2$ 발생량을 감소시킬 목적으로 혼화재 및 무기계 자극제를 사용한 고강도 콘크리트의 역학적 특성을 평가하였으며, HVMA 결합재 도출과 W/B 변화 및 양생온도에 따른 HVMA 고강도 콘크리트를 실험하였다. 실험결과, 다량의 혼화재와 무기계 자극제인 열병합애시와 무수석고를 혼합 사용한 HVMA 결합재 배합을 설계하였으며, 설계된 HVMA 결합재를 사용할 경우 W/B 26% 수준에서 HVMA 고강도 콘크리트 배합이 유동특성과 역학적 특성이 양호한 것으로 나타났다. 또한 HVMA 결합재를 사용한 고강도 콘크리트의 양생온도 영향을 검토한 결과, 양생온도 $20^{\circ}C$ 이상 확보한 경우에는 50MPa 이상의 고강도 HVMA 고강도 콘크리트 제조가 실용화 가능성이 높은 것으로 나타났다.

The purpose of this study is to evaluate on the mechanical properties of High Volume Mineral Admixture(HVMA) high strength concrete to reduce the amount use of Ordinary Potland Cement, to discover the optimized HVMA binder and to test HVMA concrete based on the change of W/B and curing temperature. The results were shown as follows: The HVMA binder using the mixture of combined heat power plant fly ash and anhydrous gypsum known as inorganic activators with the mixture of blast furnace slag and fly ash was optimized. The mixture of HVMA high strength concrete at 26% of W/B ratio had a good result on flow characteristic and mechanical properties. High strength HVMA concrete over 50MPa is possibly manufactured over curing temperature $20^{\circ}C$.

키워드

참고문헌

  1. Cho, J. W. (2011). $CO_{2}$ Reduction Cement Technologies, Magazine of the Korea Concrete Institute, 23(6), 32-35.
  2. Han, S.H., Kim, J.K., Park, W.S., and Kim, D.H. (2001). Effect of Temperature and Aging on the Relationship Between Dynamic and Static Elastic Modulus of Concrete, Journal of the Korea Concrete Institute, 13(6), 610-618.
  3. Kim, M.H., Lee, S.S. (1999). A Study on the Application in Site of the Concrete Using Fly Ash Produced in Combinded Heat Power Plant, Journal of the Korea Concrete Institute, 11(5), 41-49.
  4. Kwon, Y.H., Lee, D. G. (2013). A Study on the Quality Properties of Alkali-activated cement free Mortar using Industrial by-products, Journal of Korea Recycled Construction Resources Institute, 1(1), 58-66. https://doi.org/10.14190/JRCR.2013.1.1.058
  5. Lee, K.M., Kwon, K.H., Lee, H.K., Lee, S.H., Kim, G.Y. (2004). Characteristics of Autogenous Shrinkage for Concrete Containing Blast-Furnace Slag, Journal of the Korea Concrete Institute, 16(5), 621-626. https://doi.org/10.4334/JKCI.2004.16.5.621
  6. Mun, G.J., Lee, C.W., So, S.Y., Soh, Y.S. (2006). Hydration Reaction of Non-Sintering Cement Using Inorganic Industrial Waste as Activator, Journal of the Korea Concrete Institute, 18(2), 267-274. https://doi.org/10.4334/JKCI.2006.18.2.267
  7. Soh, Y.S., Piao, Y.M., Mun, G.J. (2001). Effect of Inorganic Stimulus Agent on Compressive Strength and Pore Structure of Blast Furnace Slag Cement, Journal of the Architectural Institute of Korea Structure & Construction, 17(9), 1-8.
  8. Yoon, Y.S., Shin, H.O., Lee, S.H., Lee, W.J. (2013). Evaluation of Mechanical Properties of 200MPa Uktra-High-Strength Concrete Incorporating Different Fine Aggregates, Journal of the Architectural Institute of Korea Structure & Construction, 29(9), 47-55.

피인용 문헌

  1. Durability Assessment of High Strength Concrete with High Volume Mineral Admixture vol.27, pp.6, 2015, https://doi.org/10.4334/JKCI.2015.27.6.641