Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

Effect of Organic Admixture(Calcium Lignosulfonate) (I) on the Early Hydration Process of Protland Cement

시멘트 초기 수화과정에 대한 유기혼화제의 영향(I)

  • Published : 1984.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this study we mainly dealt with the effects of organic retarder(calcium lignosulfate) on the early hydration process of clinker minerals. From a consideration of the hydration process of tricalcium silicate $(C_3S)$ tricalcium silicate $(C_3S)$-tricalcium aluminate $(C_3A)$ tricalcium silicate $(C_3S)$-tetracalcium aluminof-errite $(C_4AF)$ systems with calcium lignosulfate the following results were obtained. 1. when 0.25wt% of CLS was added to $C_3S$ the hydration process was progressed normally but adding of 0.5wt% its hydration was greatly retarded. 2. The hydration of $C_3S$-$C_3A$ system was progressed normally up to 0.5wt% but by adding gypsum its hydration was retarded slightly. 3. The hydration of $C_3S$-$C_4AF$ system was greatly retarded even with 0.25wt% of CLS but by adding gypsum its hydration process was recovered normally.

Keywords

References

  1. Peoc. Third Internsymp. W.C. Hansen
  2. Amer. Soc. Test. Mater. Spec. Tech. Publ. v.266 Symposium of Effect of Water Readucing Admixtures and Set-Retarding Admixtures on Properties of concrete W.C. Hansen
  3. J. Phisics and Collid Chem. v.52 Some Physical and Chemical Properties of Weight Fractionated Lingosulfonic Acid, Including the Dissociation of Lingosulfonates F.M. Ernsberger;W.G. France
  4. ASTM Tech. Publ. v.226 Actions of Calcium Sulfate Admixtures in Portland Cement Paste W.C. Hansen
  5. Semento Gijutsu Nenpo v.13 no.160 S. Suzuki;S. Nishi
  6. Cement. Concer. Res. v.2 no.415 A Review of the Mechanisms of Set-Retardation in Portland Cement Pastes Containing Organic Admixtures J.F. Young
  7. Transp. Res. Record no.564 Reaction Mechanism of Organic Admixtures with Hydrating Cement Compounds J.F. Young
  8. Proc. 5th Int. Symp. Chem. Cement v.4 Use of Surface-Active Agents in Concrete R.C. Mielenz
  9. J. Am. Ceram. Soc. v.46 no.8 Adsorption of Admixture on Portland Cement B. Blank;D.R. Rossington;L.A. Weinland
  10. J. Am. Ceram. Soc. v.51 no.1 Adsorption of Admixtures on Portland Cement Hydration Products D.R. Rossington;E.J. Runk
  11. Proc. 7th. Int. Congr. Chem. Cement v.Ⅱ-1 Mechanisms of Portland Cement Hydration J. Skalny;J.F. Young
  12. PCA, Bull. v.12 The influence of Gypsum on the Hydration and Properties of Portland Cement Pastes W. Lerch
  13. Proc. Fith Intern. Symp. v.Ⅱ no.256 J.F. Young
  14. L'Industria Italiana of Cemento Contribution to Knowledge of the action of calcium lignosulfonate on hydration of cements E. Crepaz;A. Raccanelli
  15. J. Am. Conc. Inst. A Case of Abnormally Slow Hardening Concrete for Tunnel Lining L.H. Tuthill;R.F. Adams;S.H. Bailey;R.W. Smith