Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Fabrication of Concrete Containing Mechanochemically Surface Treated(MST) Fly Ash

Mechanochemical 표면처리한 Fly Ash 혼화 Concrete의 제조

  • Lee, Hyung-Jik (Department of Ceramic Engineering, Kangnung National University) ;
  • Koo, Ja-Hun (Department of Ceramic Engineering, Kangnung National University) ;
  • Yoo, In-Sang (Department of Ceramic Engineering, Kangnung National University) ;
  • Song, Doo-Gyoo (Department of Ceramic Engineering, Kangnung National University) ;
  • Joung, Hae-Kyoung (Department of Ceramic Engineering, Kangnung National University) ;
  • Kwon, Hyouk-Byoung (Department of Ceramic Engineering, Kangnung National University) ;
  • Yoon, Sang-Ok (Department of Ceramic Engineering, Kangnung National University) ;
  • Lee, Hyung-Bock (Department of Ceramic Engineering, Myongji University) ;
  • Lee, Hong-Lim (Department of Ceramic Engineering, Yonsei University)
  • 이형직 (강릉대학교 세라믹공학과) ;
  • 구자훈 (강릉대학교 세라믹공학과) ;
  • 유인상 (강릉대학교 세라믹공학과) ;
  • 송두규 (강릉대학교 세라믹공학과) ;
  • 정해경 (강릉대학교 세라믹공학과) ;
  • 권혁병 (강릉대학교 세라믹공학과) ;
  • 윤상옥 (강릉대학교 세라믹공학과) ;
  • 이형복 (명지대학교 세라믹공학과) ;
  • 이홍림 (연세대학교 세라믹공학과)
  • Published : 2002.01.01
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Abstract

Fabrication of high strength structural concrete was investigated by using a mechanochemically Surface Treated Fly Ash(MSTFA) induced by mechanochemical processing through ball-milling of (90 wt% As Recevied Fly Ash(ARFA) + 10wt% cement) mixture, which was compared to the specimen fabricated by using As Received Fly Ash(ARFA) in terms with compressive strength and microstructures. The compressive strength of concrete specimen fabricated by using MSTFA represented 10-20% and 2-7% higher value than that for the case of using ARFA and BPFA in each cases. Increased compressive strength as above mentioned is considered to be caused by mutually increased affinity generated between cement and fly ash during mechanochemical processing.

채취 그대로의 fly ash(As Received Fly Ash, ARFA)90 wt%와 cement 10 wt%의 혼합물 ball milling 함으로서 mechanochemical processing에 의해 표면 처리한 fly ash(Mechanochemically Surface Treated Fly Ash, MSTFA)를 사용하여 fly ash 혼화 concrete의 강도 증진을 위한 연구를 수행하였다. ARFA에 ball-milling하여 particle size reduction만 발생시킨 fly ash(Ball-mill Processed Fly Ash, BPFA)혼화시의 공시체와 비교하여 동일한 fly ash의 혼화량, 동일한 재령의 압축강도 및 미세구조의 관점에서 고찰하였다. MSTFA를 혼화한 concrete 공시체의 압축강도는 ARFA를 혼화한 것보다 10-20%, BPFA를 혼화한 것보다는 2-7 wt% 상승한 값을 나타내었다. 이 같은 강도 상승은 MSTFA와 cement의 각 입자의 서로에 대한 친화성이 증대되며 이로 인하여 수화물 생성시 cement와 fly ash 입자간의 결합력이 더욱 증가하게 되어 압축강도가 증가하는 것으로 고려된다.

Keywords

References

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