Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지
DOI QR코드

DOI QR Code

Effect of High-Molecular Weight Organic Compounds on Improvement of Pore Structure of Cement Materials

  • Lee, Woong-Geol (Department of Advanced Materials Engineering, Kangwon National University) ;
  • Jeon, Se-Hoon (Department of Advanced Materials Engineering, Kangwon National University) ;
  • Song, Myong-Shin (Research Center of Advanced Convergence Processing on Materials, Kangwon National University) ;
  • Kim, Jusung (Research Center of Advanced Convergence Processing on Materials, Kangwon National University)
  • Received : 2019.09.05
  • Accepted : 2019.10.08
  • Published : 2019.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

Carbon dioxide emissions involved in global warming are one of the most important issues in the world, and carbon dioxide emissions from the cement industry are about 7% of total carbon dioxide emissions. Thus, reduction in the amount of utilized cement can contribute to a reduction of carbon dioxide emissions. The average life of concrete is 20 ~ 30 years, and if concrete life can be improved by ten years, cement use will be much lower. In this study, we examined the use and effect of fructan from microbes as a method for the densification of the pore structure of cement. The effect of fructan on the hydration reaction and pore distribution, as well as the water absorption of hardened cement mortar were studied. Pores distribution increased in mesopore OPC, and absorption rate was found to decrease with the use of fructan, which has a glue-like and swelling character.

Keywords

References

  1. P. K. Metha and P. J. M. Monterio, Concrete, Microstructure, Properties and Materials; pp. 133-205, McGraw-Hill, London, 2006.
  2. M. Duncan, C. M. Richard, Y. H. William, and T. G. Kenneth, "Cement-Aggregate Reaction in Concrete," J. Am. Concr. Inst., 19 93-128 (1947).
  3. K. Bae, "A Study on Relationship Between Osmosis by Semi-permeability to NaCl solution and Pore Structure of Cement Mortar," J. Archit. Inst., 22 [1] 103-10 (2006).
  4. PHYS. ORG, 'BacillaFilla' for Concrete Cracks, https://phys.org/news/2010-11-bacillafilla-concrete.html. Accessed on 05/09/2019.
  5. R. Siddique and N. K. Chahal, "Effect of Ureolytic Bacteria on Concrete Properties," Constr. Build. Mater., 25 [10] 3791-801 (2011). https://doi.org/10.1016/j.conbuildmat.2011.04.010
  6. K. H. Jang and S. A. Kang, "Research and Market Trends in Levan," Food Sci. Ind., 36 [2] 85-91 (2003).
  7. G. O. Phillips and P. A. Williams, Handbook of Hydrocolloide; p.604, Woodhead, Cambrige, 2009.
  8. J. F. Young, "A Review of Mechanisms of Set-Retardation in Portland Cement Pastes Contacting Organic Admixture," Cem. Concr. Res., 2 [4] 415-33 (1972). https://doi.org/10.1016/0008-8846(72)90057-9
  9. Q. Zeng, K. Li, T. Fen-Chong, and P. Dangla, "Pore Structure Characterization of Cement Pastes Blended with High Volume Fly-Ash," Cem. Concr. Res., 42 [1] 194-204 (2012). https://doi.org/10.1016/j.cemconres.2011.09.012
  10. Korea Standard, Determination of the Water Absorption Coefficient of Building Materials, 2008.
  11. P. K. Metha and P. J. M. Monterio, Concrete, Microstructure, Properties and Materials; pp. 138-42, McGraw-Hill, London, 2006.
  12. H. S. So, J. S. Oh, and G. B. Park, "Permeability and Transport Mechanism of Media into Concrete," Infrastruct. Saf., 37 [1] pp. 53-77 (2011).
  13. Korea Standard, Testing Method for Chloride Ion Penetration of Concrete by Using Indicator, 2005.