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Relative strength, pozzolanic activity and cement hydration in superplasticised Metakaolin concrete

Wild, S. / Khatib, J.M. / Jones, A.

The manner in which finely divided highly active pozzolans such as CSF (condensed silica fume) and MK (metakaolin) influence the rate of strength development of concrete is highly complex. The role of MK in enhancing the strength of concrete is reviewed and the principal mechanisms identified. Metakaolin concretes with a range of MK contents (0 % to 30 %) have been cured for periods of 1 day to 90 days. The change in relative strength with both curing time and metakaolin content is discussed in relation to the 'filler effect', acceleration in OPC (ordinary portland cement) hydration and the pozzolanic reaction. The observed results establish that there is an optimum OPC replacement level of 20 weight-% MK and that the contribution which MK makes to strength is restricted beyond 14 days.

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Relative strength, pozzolanic activity and cement hydration in superplasticised Metakaolin concrete

Wild, S. / Khatib, J.M. / Jones, A.

The manner in which finely divided highly active pozzolans such as CSF (condensed silica fume) and MK (metakaolin) influence the rate of strength development of concrete is highly complex. The role of MK in enhancing the strength of concrete is reviewed and the principal mechanisms identified. Metakaolin concretes with a range of MK contents (0 % to 30 %) have been cured for periods of 1 day to 90 days. The change in relative strength with both curing time and metakaolin content is discussed in relation to the 'filler effect', acceleration in OPC (ordinary portland cement) hydration and the pozzolanic reaction. The observed results establish that there is an optimum OPC replacement level of 20 weight-% MK and that the contribution which MK makes to strength is restricted beyond 14 days.

Relative strength, pozzolanic activity and cement hydration in superplasticised Metakaolin concrete

Wild, S. / Khatib, J.M. / Jones, A.

The manner in which finely divided highly active pozzolans such as CSF (condensed silica fume) and MK (metakaolin) influence the rate of strength development of concrete is highly complex. The role of MK in enhancing the strength of concrete is reviewed and the principal mechanisms identified. Metakaolin concretes with a range of MK contents (0 % to 30 %) have been cured for periods of 1 day to 90 days. The change in relative strength with both curing time and metakaolin content is discussed in relation to the 'filler effect', acceleration in OPC (ordinary portland cement) hydration and the pozzolanic reaction. The observed results establish that there is an optimum OPC replacement level of 20 weight-% MK and that the contribution which MK makes to strength is restricted beyond 14 days.

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Title:

Relative strength, pozzolanic activity and cement hydration in superplasticised Metakaolin concrete

Additional title:

Relative Festigkeit, puzzolanische Aktivität und Zementhydratisierung in superplastifizierten metakaolinhaltigem Beton

Contributors:

Wild, S. (author) / Khatib, J.M. (author) / Jones, A. (author)

Published in:

Cement and Concrete Research ; 26 ; 1537-1544

Publication date:

1996

Size:

8 Seiten, 2 Bilder, 4 Tabellen, 12 Quellen

ISSN:

DOI:

https://doi.org/10.1016/0008-8846(96)00148-2

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Metakaolin , mechanische Festigkeit , Puzzolanzement , hydraulischer Zement , Hydratisieren , Wasserabbinden von Zement , Beton , Plastizität , Bearbeitbarkeit , Füllstoff , Portlandzement

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