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ITZ microstructure of concrete containing GGBS

Gao, J.M. / Qian, C.X. / Liu, H.F. / Wang, B. / Li, L.

The interfacial transition zone (ITZ) of aggregate-cement paste and the morphology of hydrates in concrete containing ground granulated blast-furnace slag (GGBS) have been investigated using XRD, SEM and microhardness measurements. The experimental results demonstrated that GGBS significantly decreases both the quantity and the orientating arrangement of CH crystals at the ITZ. The CH crystal size becomes smaller because of the addition of GGBS. The weak ITZ between aggregate and cement paste was strengthened as a result of the pozzolanic reaction of GGBS. The above improvements become much more significant with the decrease of particle sizes of GGBS.

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ITZ microstructure of concrete containing GGBS

Gao, J.M. / Qian, C.X. / Liu, H.F. / Wang, B. / Li, L.

The interfacial transition zone (ITZ) of aggregate-cement paste and the morphology of hydrates in concrete containing ground granulated blast-furnace slag (GGBS) have been investigated using XRD, SEM and microhardness measurements. The experimental results demonstrated that GGBS significantly decreases both the quantity and the orientating arrangement of CH crystals at the ITZ. The CH crystal size becomes smaller because of the addition of GGBS. The weak ITZ between aggregate and cement paste was strengthened as a result of the pozzolanic reaction of GGBS. The above improvements become much more significant with the decrease of particle sizes of GGBS.

ITZ microstructure of concrete containing GGBS

Gao, J.M. / Qian, C.X. / Liu, H.F. / Wang, B. / Li, L.

The interfacial transition zone (ITZ) of aggregate-cement paste and the morphology of hydrates in concrete containing ground granulated blast-furnace slag (GGBS) have been investigated using XRD, SEM and microhardness measurements. The experimental results demonstrated that GGBS significantly decreases both the quantity and the orientating arrangement of CH crystals at the ITZ. The CH crystal size becomes smaller because of the addition of GGBS. The weak ITZ between aggregate and cement paste was strengthened as a result of the pozzolanic reaction of GGBS. The above improvements become much more significant with the decrease of particle sizes of GGBS.

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Title:

ITZ microstructure of concrete containing GGBS

Contributors:

Gao, J.M. (author) / Qian, C.X. (author) / Liu, H.F. (author) / Wang, B. (author) / Li, L. (author)

Published in:

Cement and Concrete Research ; 35 ; 1299-1304

Publication date:

2005

Size:

6 Seiten, 7 Quellen

ISSN:

DOI:

https://doi.org/10.1016/j.cemconres.2004.06.042

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Mikrostruktur , Hochofenschlacke , Mikrohärte , Kristall , Kristallorientierung , Puzzolanreaktion , Teilchengrößenbestimmung , Rasterelektronenmikroskopie , Röntgenbeugung , Röntgenanalyse , Zementpaste , Betonmörtel , Grenzflächenreaktion , Grenzflächenverhalten

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