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Alkali-aggregate reaction in concrete containing high-alkali cement and granite aggregate

Owsiak, Z.

The paper discusses results of the research into the influence of high-alkali Portland cement on granite aggregate. The deformation of the concrete structure occurred after 18 months. The research was carried out by means of a scanning electron microscope equipped with a high-energy dispersive X-ray analyzer that allowed observation of unpolished sections of concrete bars exhibiting the cracking pattern typical of the alkali-silica reaction. Both the microscopic observation and the X-ray elemental analysis confirm the presence of alkali-silica gel and secondary ettringite in the cracks.

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Alkali-aggregate reaction in concrete containing high-alkali cement and granite aggregate

Owsiak, Z.

The paper discusses results of the research into the influence of high-alkali Portland cement on granite aggregate. The deformation of the concrete structure occurred after 18 months. The research was carried out by means of a scanning electron microscope equipped with a high-energy dispersive X-ray analyzer that allowed observation of unpolished sections of concrete bars exhibiting the cracking pattern typical of the alkali-silica reaction. Both the microscopic observation and the X-ray elemental analysis confirm the presence of alkali-silica gel and secondary ettringite in the cracks.

Alkali-aggregate reaction in concrete containing high-alkali cement and granite aggregate

Owsiak, Z.

The paper discusses results of the research into the influence of high-alkali Portland cement on granite aggregate. The deformation of the concrete structure occurred after 18 months. The research was carried out by means of a scanning electron microscope equipped with a high-energy dispersive X-ray analyzer that allowed observation of unpolished sections of concrete bars exhibiting the cracking pattern typical of the alkali-silica reaction. Both the microscopic observation and the X-ray elemental analysis confirm the presence of alkali-silica gel and secondary ettringite in the cracks.

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Title:

Alkali-aggregate reaction in concrete containing high-alkali cement and granite aggregate

Contributors:

Owsiak, Z. (author)

Published in:

Cement and Concrete Research ; 34 ; 7-11

Publication date:

2004

Size:

5 Seiten, 12 Quellen

ISSN:

DOI:

https://doi.org/10.1016/S0008-8846(03)00189-3

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Portlandzement , Erdölspalten , Kieselgel , Kristallisation , Luftfeuchte , Rasterelektronenmikroskopie , energiedispersive Spektrometrie , Ettringit , Alkali-Silica-Reaktion , Zuschlagstoff , Granit

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