Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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A Study on the Manufacturing of Energetically-Modified Reject Fly Ash and the Characteristics of Mortar

  • Jeong, Jae Hyun (Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Chu, Yong Sik (Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Yi, Chong Ku (Department of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Seo, Sung Kwan (Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Kwon, Duk Young (Energy & Environment Division, Korea Institute of Ceramic Engineering and Technology)
  • Received : 2016.01.29
  • Accepted : 2016.03.04
  • Published : 2016.03.31
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Abstract

Energetically-modified material using reject fly ash (RFA), generated from thermal power plants, was manufactured to investigate the effect of the material on the physical and chemical characteristics of cement mortar. In order to modify reject fly ash, a vibration mill was used. Particle size, grain shape, and crystal structure of the ash were analyzed. Then, the compressive strength of the mortar using energetically-modified reject fly ash (ERFA) was measured. Microstructure and X-ray diffraction (XRD) patterns were also used in the analysis. As the replacement rate of ERFA increased, the value of the compressive strength tended to decrease. However, it was found that the compressive strength values of 7 and 28 days-cured specimens were higher than those of conventional ordinary Portland cement (OPC) mortar with 10 % replacement rate condition.

Keywords

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