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Portland ash cement degradation in ammonium-sulfate solution

Miletic, S. / Ilic, M. / Ranogajec, J. / Marinovic-Neducin, R. / Djuric, M.

This paper considers the sulphate corrosion of Portland cements (C₃A content in clinker 6.60% and 13.31%) and the same Portland cements where the 30% of Portland cement clinker was replaced with coal ash. The test samples were prepared according to Koch-Steinegger's method and then exposed to the influence of aggressive environment (10% (NH₄)₂SO₄ solution). The measurements of several properties were carried out, the results were analyzed, and a correlation among the influencing factors was suggested through mass change, bonded SO₄^2- content, and degradation coefficient. There was a strong influence of coal ash on degradation, also.

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Portland ash cement degradation in ammonium-sulfate solution

Miletic, S. / Ilic, M. / Ranogajec, J. / Marinovic-Neducin, R. / Djuric, M.

This paper considers the sulphate corrosion of Portland cements (C₃A content in clinker 6.60% and 13.31%) and the same Portland cements where the 30% of Portland cement clinker was replaced with coal ash. The test samples were prepared according to Koch-Steinegger's method and then exposed to the influence of aggressive environment (10% (NH₄)₂SO₄ solution). The measurements of several properties were carried out, the results were analyzed, and a correlation among the influencing factors was suggested through mass change, bonded SO₄^2- content, and degradation coefficient. There was a strong influence of coal ash on degradation, also.

Portland ash cement degradation in ammonium-sulfate solution

Miletic, S. / Ilic, M. / Ranogajec, J. / Marinovic-Neducin, R. / Djuric, M.

This paper considers the sulphate corrosion of Portland cements (C₃A content in clinker 6.60% and 13.31%) and the same Portland cements where the 30% of Portland cement clinker was replaced with coal ash. The test samples were prepared according to Koch-Steinegger's method and then exposed to the influence of aggressive environment (10% (NH₄)₂SO₄ solution). The measurements of several properties were carried out, the results were analyzed, and a correlation among the influencing factors was suggested through mass change, bonded SO₄^2- content, and degradation coefficient. There was a strong influence of coal ash on degradation, also.

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Title:

Portland ash cement degradation in ammonium-sulfate solution

Contributors:

Miletic, S. (author) / Ilic, M. (author) / Ranogajec, J. (author) / Marinovic-Neducin, R. (author) / Djuric, M. (author)

Published in:

Cement and Concrete Research ; 28 ; 713-725

Publication date:

1998

Size:

13 Seiten, 14 Quellen

ISSN:

DOI:

https://doi.org/10.1016/S0008-8846(98)00023-4

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Kohlenasche , Korrosion , Schwefelverbindung , Ammoniumverbindung , Flugasche , Flugaschenzement , Portlandzement , Ammoniumsulfat , aggressives Medium

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