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Durability of new fly ash-belite cement mortars in sulfated and chloride medium

Guerrero, A. / Goni, S. / Macias, A.

The durability of mortars fabricated with two kinds of low-energy cements containing hydrothermally activated Spanish fly ashes is presented. The study has been carried out by means of the Koch-Steinegger test at 21+/-2 degree C for 180 days. The durability was evaluated from the changes of flexural strength of the mortars after immersion in the potential aggressive solution (0.5 M NaCl+0.5 M Na₂SO₄) compared with those obtained in similar samples immersed in demineralized water. The changes in microstructure were followed by mercury intrusion porosimetry (MIP) and mineralogy by X-ray diffraction (XRD).

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Durability of new fly ash-belite cement mortars in sulfated and chloride medium

Guerrero, A. / Goni, S. / Macias, A.

The durability of mortars fabricated with two kinds of low-energy cements containing hydrothermally activated Spanish fly ashes is presented. The study has been carried out by means of the Koch-Steinegger test at 21+/-2 degree C for 180 days. The durability was evaluated from the changes of flexural strength of the mortars after immersion in the potential aggressive solution (0.5 M NaCl+0.5 M Na₂SO₄) compared with those obtained in similar samples immersed in demineralized water. The changes in microstructure were followed by mercury intrusion porosimetry (MIP) and mineralogy by X-ray diffraction (XRD).

Durability of new fly ash-belite cement mortars in sulfated and chloride medium

Guerrero, A. / Goni, S. / Macias, A.

The durability of mortars fabricated with two kinds of low-energy cements containing hydrothermally activated Spanish fly ashes is presented. The study has been carried out by means of the Koch-Steinegger test at 21+/-2 degree C for 180 days. The durability was evaluated from the changes of flexural strength of the mortars after immersion in the potential aggressive solution (0.5 M NaCl+0.5 M Na₂SO₄) compared with those obtained in similar samples immersed in demineralized water. The changes in microstructure were followed by mercury intrusion porosimetry (MIP) and mineralogy by X-ray diffraction (XRD).

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Title:

Durability of new fly ash-belite cement mortars in sulfated and chloride medium

Contributors:

Guerrero, A. (author) / Goni, S. (author) / Macias, A. (author)

Published in:

Cement and Concrete Research ; 30 ; 1231-1238

Publication date:

2000

Size:

8 Seiten, 14 Quellen

ISSN:

DOI:

https://doi.org/10.1016/S0008-8846(00)00313-6

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Zement , Flugasche , Dauerhaftigkeit , Biegefestigkeit , Natriumverbindung , Schwefelverbindung , Mikrostruktur , Porosimeter , Röntgenbeugung , Röntgenanalyse , Belit , Korrosionsbeständigkeit , Chloridkorrosion

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