The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
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Influence of Chemical Activators on Cement-Fly ash Paste and Strength Development of Concrete

  • Song, Jong-Taek (Department of Materials Science & Engineering, Dankook University) ;
  • Yun, Sung-Dae (Department of Materials Science & Engineering, Dankook University) ;
  • Kim, Jae-Young (Department of Materials Science & Engineering, Dankook University) ;
  • Lee, Chin-Yong (Civil R & D Team, Dongah Construction Industrial Co., Ltd.)
  • Published : 2000.06.01
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Abstract

The effects of replacement level, curing method and chemical admixtures were investigated in the cement-fly ash paste. The strength of cement-fly ash paste is lower than that of controlled cement paste only and the differences increase with replacement level. However, in steam curing, strength of cement-fly ash pastes is improved, especially, at early ages. In order to improve early strength, the use of $Na_2SO_4$in cement-fly ash paste increases the quality of concrete. In addition, improvement of strength of concrete including 30% of fly ash can be obtained and achieves the highest strength compared to other concrete mixtures.

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References

  1. J.of Concrete v.31 no.2 What the ready-mixed concrete industry has to offer B.Brown
  2. Cement Association Japan Standard Japan Cement Association
  3. Cement and Concrete Research v.25 Acceleration of the Reactivity of Flyash by Chemical Activation C.Shi;R.L.Day
  4. Cement and Concrete Rese-arch v.25 Pore Structures of Fly ashes Activated by Ca(OH)₂and CaSO₄2H₂O W.Ma;C.Liu;P.W.Brown;S.Komarneni
  5. Proceedings,2nd CANMET/ACI International Conference on the Use of Fly ash,Silica Fume,Slag and National Pozzolan in Concrete Effect of Fly ash on Physical Properties of Concrete S.H.Geber;P.Klieger;V.M.Malhotra
  6. Cement and Concrete Research v.15 Quantitative Determination of Pozzolans in Hydrated Systems of Cement or Ca(OH)₂ with Fly ash or Silica Fume S.Li;D.M.Roy;A.Kumar
  7. ACI Standard Standard Practice for Curing Concrete
  8. J.of the Korea Architecture Institute v.12 no.3 A Study on the Accelerated Curing on the De-moulded Compressive St-rength of Concrete S.G.Choi;S.Y.Yu;S.B.Kim
  9. J.of the Korea Architecture Institute v.11 no.1 A Preliminary Study on Compressive Strength Curing Method Y.K.Kwak;S.J.Jung
  10. J.of the Korea Concrete Institute v.10 no.1 The Strength Development of Flyash Concrete in Steam Curitng C.Y.Lee;S.Y.Bae