DOI QR코드

DOI QR Code

Reduction of Drying Shrinkage of Mortar and Concrete by Expansion of Rapid Cooling Slag Fine Aggregate

급냉 슬래그 잔골재의 팽창성을 활용한 모르타르 및 콘크리트의 건조수축저감에 관한 연구

  • Received : 2015.04.07
  • Accepted : 2015.05.07
  • Published : 2015.05.31

Abstract

It is necessary to maximize the durability of Concrete for the underground structure because its maintenance and reinforcement are difficult. For cracks due to drying shrinkage of the concrete on the characteristics of the material, there is a need for an alternative in the deterioration phenomenon that occurs. In this study, fundamental properties including drying shrinkage of mortar and concrete were investigated to replace fine aggregate from cooling slag for reducing drying shrinkage of mortar and concrete. In the case of rapid cooling slag fine aggregate, it was effective to reduce and restrain initial shrinkage of mortar and concrete, and compressive strength was increased through the all specimen in proportion to its replacement ratio.

Keywords

Drying shrinkage;Dtying shrinkag length change;Expansive admixture;Fine aggregate from rapid cooling slag;Shrinkage reducing agent

References

  1. H. S. Han, Development and Application of High Performance Shrinkage Reducing Agent for Concrete, Doctoral Dissertation, Keimyung University, Korea, 2013.
  2. D. G. Lee, Mitigation of Autogenous Shrinkage for High Strength Concrete Applying Edible Oils, Doctoral Dissertation, Cheongju University, Korea, 2011.
  3. Bazant, z. p., Baweja, S., Creep and shrinkage prediction model for analysis and design of concrete structures; Model B3, Materials and structures, 29(2), pp. 126, 1996. DOI: http://dx.doi.org/10.1007/BF02486204 https://doi.org/10.1007/BF02486204
  4. S. M. Kang, H. J. Kang, M. S. Song, P. H. Park, A Study on the Early Hydration-Retarding Mechanism of Polymer Modified Cement, Proceedings of the Korea Concrete Institute, 21(1), pp. 221-222, 2009.