Browse > Article
http://dx.doi.org/10.4334/JKCI.2005.17.6.1019

Effect of Various Superplasticizers on the Hydration of Cement Paste  

Shin Jin-Yong (R&D Center, Silkroad C&T Co. Ltd)
Kim Jae-Young (DAEHAN I.M. Co. Ltd)
Hong Ji-Sook (Korea Research Institute of Chemical Technology)
Suh Jeong-Kwon (Korea Research Institute of Chemical Technology)
Lee Young-Seok (Dept. of Fine Chemical Eng. & Chemitsty, Chungnam National University)
Publication Information
Journal of the Korea Concrete Institute / v.17, no.6, 2005 , pp. 1019-1024 More about this Journal
Abstract
To research effects of various chemical superplasticizers(Lignosulfonic acid, Naphthalene sulfonated formaldehyde condensate, melamine sulfonated formaldehyde condensate, and Polycarboxylate) on the hydration of cement, experiments involving XRD, SEM, and DSC have been analysed with cement paste specimens. Regardless of types and dosages of superplasticizers, hydration reaction of specimen applied superplasticizer was delayed to 3 day, but then it showed similarity to plain which don't add superplasticizer. Moreover, the hydrating rate of cement paste was retarded as dosage of superplasticizer was increased. Also, kinetics related with hydrate of cement paste was slow in order of lignosulfonic acid, polycarboxylate, melamine and naphthalene sulfonated formaldehyde condensate. Nevertheless, when all kinds of chemical admixtures were used, morphologies of these hydrates were denser and more uniform than those of plain.
Keywords
superplasticizer; lignosulfonic acid; naphthalene sulfonated formaldehyde condensate; melamine sulfonated formaldehyde condensate; polycarboxylate;
Citations & Related Records
연도 인용수 순위
  • Reference
1 박승범, 전상진, '혼화제의 사용현황 및 전망', 콘크리트학회지, 8권 2호, 1996, pp.5-12
2 L. H. Grierson, J. C. Knight, and R. Maharaj, 'The role of calcium ions and lignosulphonate plasticiser in the hydration of cement', Cement & Concrete Research, Vol.35, 2005, pp.631 -636   DOI   ScienceOn
3 김병기, 김송호, '콘크리트용 화학 혼화제의 개발 및 연구의 최신 동향', 콘크리트 학회지, 14권 1호, 2002, pp.38-43
4 김상철, 유호석, '수중 불분리성 콘크리트용 혼화제의 특성과 영향', 콘크리트학회지, 13권 2호, 2001, pp.30-37
5 Pipat Tennkhajomkit and Toyoharu Nawa, 'The fluidity of fly ash - cement paste containing naphthalene sulfonate superplasticizer', Cement & Concrete Research, Vol.34, 2004, pp.1017-1024   DOI   ScienceOn
6 S. Chandra and J. Bjornstrom 'Influence of cement and superplasticizers type and dosage on the fluidity of cement mortars-Part I', Cement & Concrete Research, Vol.32, 2002, pp.1065-1611
7 S. Chandra and J. Biomstrom 'Influence of cement and superplasticizers type and dosage on the fluidity of cement mortars-Part II', Cement & Concrete Research, Vol.32, 2002, pp.1613-1619   DOI   ScienceOn
8 H. Uchikawa, S. Uchida, K. Ogawa, and S. Hanehara, 'Influence of CaSO4 . 2H2O, CaSO4 . l/2H2O, and CaSO4 on the initial hydration of clinker with different burning temp.', Cement & Concrete Research, Vol.14, 1984, pp.645-656   DOI   ScienceOn
9 H. Uchikawa, S. Hanehara, T. Shirasaka, and D. Sawaki, 'Effect of admixture in hydration of cement, adsorptive behavior of admixture, and fluidity and setting of fresh cement paste', Cement & Concrete Research, Vol.22, 1992, pp.1115-1129   DOI   ScienceOn
10 W. Sha, E. A. O'Neill, and Z. Guo, 'Differential scanning calorimetery study of ordinary portland cement', Cement & Concrete Research, Vol.29, 1999, pp.1487-1489   DOI   ScienceOn
11 Shunsuke Hanehara and Kazuo Yamada, 'Interaction between cement and chemical admixture from the point of cement hydration, absorption behaviour of admixture, and paste rheology', Cement & Concrete Research, Vol.29, 1999, pp.1159-1165   DOI   ScienceOn
12 I. Papayianni, G. Tsohos, N. Oikonomou, and P. Mavria, 'Influence of superplasticizer type and mix design parameters on the performance of them in concrete mixtures', Cement and Concrete Composites, Vol.27, 2005, pp.217-222   DOI   ScienceOn
13 Yutaka Nakajima and Kazuo Yamada, 'The effect of the kind of calcium sulfate in cements on the dispersing ability of poly $\beta$-naphthalene sulfonate condensate superplasticizer', Cement & Concrete Research, Vol.34, 2004, pp.839-844   DOI   ScienceOn