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Discussion of paper "alkali-aggregate reaction in concrete containing high-alkali cement and granite aggregate" by Z. Owsiak

Grattan-Bellew, P.E.

The occurrence of alkali-silica reaction (ASR) and the formation of secondary ettringite in concrete prisms stored at 38 degree C and high humidity were analyzed. Alkali-silica reaction and delayed ettringite formation were frequently associated in field concretes and has also been reported in laboratory steam-cured concrete. In case of field concrete, exhibiting evidence of both alkali-silica reaction and delayed ettringite formation, alkali-silica reaction occurred before delayed ettringite formation. It was concluded that delayed ettringite should not be a problem in concrete made with cements with typical chemical and minerological characteristics of Type I or II cements.

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Discussion of paper "alkali-aggregate reaction in concrete containing high-alkali cement and granite aggregate" by Z. Owsiak

Grattan-Bellew, P.E.

The occurrence of alkali-silica reaction (ASR) and the formation of secondary ettringite in concrete prisms stored at 38 degree C and high humidity were analyzed. Alkali-silica reaction and delayed ettringite formation were frequently associated in field concretes and has also been reported in laboratory steam-cured concrete. In case of field concrete, exhibiting evidence of both alkali-silica reaction and delayed ettringite formation, alkali-silica reaction occurred before delayed ettringite formation. It was concluded that delayed ettringite should not be a problem in concrete made with cements with typical chemical and minerological characteristics of Type I or II cements.

Discussion of paper "alkali-aggregate reaction in concrete containing high-alkali cement and granite aggregate" by Z. Owsiak

Grattan-Bellew, P.E.

The occurrence of alkali-silica reaction (ASR) and the formation of secondary ettringite in concrete prisms stored at 38 degree C and high humidity were analyzed. Alkali-silica reaction and delayed ettringite formation were frequently associated in field concretes and has also been reported in laboratory steam-cured concrete. In case of field concrete, exhibiting evidence of both alkali-silica reaction and delayed ettringite formation, alkali-silica reaction occurred before delayed ettringite formation. It was concluded that delayed ettringite should not be a problem in concrete made with cements with typical chemical and minerological characteristics of Type I or II cements.

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Title:

Discussion of paper "alkali-aggregate reaction in concrete containing high-alkali cement and granite aggregate" by Z. Owsiak

Contributors:

Grattan-Bellew, P.E. (author)

Published in:

Cement and Concrete Research ; 35 ; 1868-1869

Publication date:

2005

Size:

2 Seiten, 4 Quellen

ISSN:

DOI:

https://doi.org/10.1016/j.cemconres.2004.07.028

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Zement , Kieselerde , Granit , Dampf , Luftfeuchte , Alkali-Silica-Reaktion , Ettringit , Dampfkraftwerk , Beton

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