Comparison of Pozzolanic Additives for Normal and High Strength Concrete

Janis Justs, Genadij Shakhmenko, Diana Bajare, Nikolajs Toropovs


Microsilica is widely recognized as a “benchmark” for pozzolanic products. Although microsilica is an industrial byproduct, it has recently become very expensive. Four different pozzolanic additives were compared by the authors of this study. Two of the additives were commercially available products – microsilica by Elkem and Centrilit NC by MC Bauchemie. The other two additives were produced under laboratory conditions. Both of them were clay-based materials. Compressive strength was determined after 7, 28 and 155 days. The objective of this research was to determine alternatives to microsilica and evaluate pozzolanic additives performance in normal and high-strength concrete.


compressive strength; metakaolin; microsilica; pozzolanic reaction

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F.M. Lea, The Chemistry of Cement and Concrete, 3rd ed., Edward Arnold, London, 1974.

Cook D.J. (1986) Natural pozzolans. In: Swamy R.N., Editor (1986) Cement Replacement Materials, Surrey University Press, p. 200.

Grutzeck et al. „Mechanisms of Hydration of Portland Cement Composites Containing Ferrosilicon Dust”, Proceedings , 4th International Conference on Cement Microscopy, Las Vegas, U.S.A., 1982- p. 193-202

V.Morin, F.Cohen Tenoudji, A.Feylessoufi and P.Richard, Superplasticizer effects on setting and structuration mechanisms of ultrahigh-performance concrete, Cement and Concrete Research 31 (2001) 63-71.

J.M.Khatib and P.S.Mangat, Influence of superplasticizer and curing on porosity and pore structure of cement paste, Cement & Concrete Composites 21 (1999) 431-437.

Joshi RC, Lohta RP. Fly ash in concrete. Advances in concrete technology. vol. 2, Amsterdam: Gordon and Breach; 1997.

Bai J., Wild S., Sabir BB., Kinuthia JM. Workability of concrete incorporating PFA and metakaolin. Mag Concrete Res., 1999;51(5):207-16.

Copernicus Research Project. Recycling of waste clay brick and tile material for the partial replacement of cement in concrete. Research contract No. CIPA-CT94-0211, First annual report, 1996, Second annual report, 1997 and Third annual report, 1998.

H.H.Murray and J.E.Kogel, Appl. Clay Sci. 29 (3–4) (2005), p. 199.

M.J.Ribeiro, D.U.Tulyagavov, J.M.Ferreira and J.A.Labrincha, J. Eur. Ceram. Soc. 25 (5) (2005), p. 703.



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