Journal of The Korean Digital Architecture Interior Association (한국디지털건축인테리어학회논문집)

Korean Digital Architecture-Interior Association (한국디지털건축·인테리어학회)
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Strength Characteristics according to the mixed CaO/$SiO_2$ Ratio to Autoclaved Aerated Concrete(AAC) used on the Exterior Panel in Buildings

건물 외벽 패널용 경량기포콘크리트(AAC)의 CaO/$SiO_2$ 혼합비에 따른 강도 특성 평가

  • Received : 2011.08.16
  • Accepted : 2011.09.02
  • Published : 2011.09.25
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Abstract

The exterior system of buildings, which is the typical curtain wall, has been made with glass and metal. Theses materials, however, have weaknesses such as inadequate insulating quality, short durability, combustibility and toxic substance. On the other hand, Autoclaved Aerated Concrete(AAC) or Autoclaved Lightweight Concrete(ALC) possess the great energy efficiency and the superb insulating quality as substitute of existing exterior system materials. In this research, strength characteristics and bubble dispersion of hydrothermal synthesis process of AAC based on CaO/$SiO_2$(C/S) ratio are analyzed. C/S ratio is determinated and bubble distribution and compressive strength are studied through the test of varied water-to-solid mineral ratio(W/S). In hydrothermal synthesis program, final C/S ratio is determined as 0.7 consider of the manufacturing process and hydrothermal synthesis is done at $180^{\circ}C$ for 7 hours. The analysis shows slurry has about 2,300cP viscosity and 0.56 specific gravity therefore it is expected AAC has the appropriate facility in the manufacturing process and Hydrates of AAC's Expansion.

Keywords

References

  1. Ilja Kadashevich, Hans-Jurgen Schneider, Dietrich Stoyan, Statistical modeling of the geometrical structure of the system of artificial air pores in autoclaved aerated concrete, Cement and Concrete Research, 35 (2005) 1495-1502. https://doi.org/10.1016/j.cemconres.2004.10.010
  2. D. Stoyan, W.S. Kendall, J. Mecke, Stochastic Geometry and Its Application, Wiley, Chichester, 1995.
  3. K.A. Snyder, K. Natesaiyer, K. Hover, Stereological and statistical properties of entrained voids in concrete : a mathematical basis for air void system characterization, in : S. Mindess, J. Skalny(Eds.) Proc. Materials Science of Concrete VI, American Ceramic Society, 2001, pp.129-214.
  4. J. Ohser, F. Mqcklich, Statistical Analysis of Microstructures in Materials Science, Wiley, Weinheim, 2000.
  5. B. Feret, C.F. Feret, $CemQUANT^{(R)}$ software Mathematical modeling in quantitative phase analysis of Portland cement, Cement and Concrete Research 29 (1999) 1627-1633 https://doi.org/10.1016/S0008-8846(99)00147-7
  6. Cenk Karakurt, Haldun Kurama, Ilker Bekir Topcu, Utilization of natural zeolite in aerated concrete production, Cement & Concrete Composites, 32 (2010) 1-8. https://doi.org/10.1016/j.cemconcomp.2009.10.002
  7. N.Y. Mostafa, Influence of air-cooled slag on physicochemical properties of autoclaved aerated concrete, Cement and Concrete Research, 35 (2005) 1349-1357. https://doi.org/10.1016/j.cemconres.2004.10.011
  8. Fumiaki Matsushita, Yoshimichi Aono, Sumio Shibata, Carbonation degree of autoclaved aerated concrete, Cement and Concrete Research, 30 (2000) 1741-1745. https://doi.org/10.1016/S0008-8846(00)00424-5
  9. International Energy Agency, World Energy Outlook 2008 reported by IEA(at Paris) (www.worldenergyyoulook.org)
  10. 국무조정실, 기후변화4차 종합대책, 2007.12
  11. 한국산업규격, KS F 2407 콘크리트의 휨강도 시험방법
  12. 한국산업규격, KS L 5105 압축강도 시험방법
  13. (주)에스와이씨, 복합기능형 ALC 패널 시스템용 부품 소재 개발(년차연구보고서), 2011.3.31