International Journal of Concrete Structures and Materials

Korea Concrete Institute (한국콘크리트학회)
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A Study on Mechanical Properties of Porous Concrete Using Cementless Binder

  • Lee, Jong-Won (Department of Convergence System Engineering, Chungnam National University) ;
  • Jang, Young-Il (Department of Construction Engineering Education, Chungnam National University) ;
  • Park, Wan-Shin (Department of Construction Engineering Education, Chungnam National University) ;
  • Kim, Sun-Woo (Department of Construction Engineering Education, Chungnam National University)
  • Received : 2016.02.28
  • Accepted : 2016.07.10
  • Published : 2016.12.30
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Abstract

This study evaluated the mechanical characteristics and durability of porous concrete produced with a cementless binder based on ground granulated blast furnace slag (BFS), fly ash (FA) and flue gas desulfurization gypsum (CP). As a result, the void ratio was increased slightly from the target void ratio, by 1.12-1.42 %. Through evaluating the compressive strength, it was found that the compressive strength of porous concrete with cementless binder decreased in comparison to the compressive strength of porous concrete with ordinary Portland cement (OPC), but the difference was insignificant, at 0.6-1.4 MPa. Through the freeze-thawing test to evaluate the durability, it was found that the relative dynamic elastic modulus of porous concrete with cementless binder decreased to 60 % or less at 80 cycles. The result of the chemical resistance test showed that the mass reduction rate was 12.3 % at 5 % HCl solution, and 12.7 % at 12.3 and 5 % $H_2SO_4$ solutions.

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References

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