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Alkali-activated slag mortars: Mechanical strength behaviour

Fernandez-Jimenez, A. / Palomo, J.G. / Puertas, F.

The objective of the present work is to know the joint influence of a series of factors (specific surface of the slag, curing temperature, activator concentration, and the nature of the alkaline activator) on the development of mechanical strengths in alkaline-activated slag cement mortars. To reach this aim, a factorial experimental design was carried out (a complete 2³ x 3¹ design) for every age studied (3 to 180 days). Through the variance analysis, the most significant factor on the response turned out to be the alkaline activator nature. The activator used, Na₂SiO₃ dot nH₂O+NaOH, was the factor that gave the highest mechanical strengths in all tests. The next most statistically significant factor was the activator concentration, followed by curing temperature, and, finally, the specific surface of the slag. The equations of the model describing the mechanical behaviour for flexural and compressive strengths and their relationships for each age studied were established.

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Alkali-activated slag mortars: Mechanical strength behaviour

Fernandez-Jimenez, A. / Palomo, J.G. / Puertas, F.

The objective of the present work is to know the joint influence of a series of factors (specific surface of the slag, curing temperature, activator concentration, and the nature of the alkaline activator) on the development of mechanical strengths in alkaline-activated slag cement mortars. To reach this aim, a factorial experimental design was carried out (a complete 2³ x 3¹ design) for every age studied (3 to 180 days). Through the variance analysis, the most significant factor on the response turned out to be the alkaline activator nature. The activator used, Na₂SiO₃ dot nH₂O+NaOH, was the factor that gave the highest mechanical strengths in all tests. The next most statistically significant factor was the activator concentration, followed by curing temperature, and, finally, the specific surface of the slag. The equations of the model describing the mechanical behaviour for flexural and compressive strengths and their relationships for each age studied were established.

Alkali-activated slag mortars: Mechanical strength behaviour

Fernandez-Jimenez, A. / Palomo, J.G. / Puertas, F.

The objective of the present work is to know the joint influence of a series of factors (specific surface of the slag, curing temperature, activator concentration, and the nature of the alkaline activator) on the development of mechanical strengths in alkaline-activated slag cement mortars. To reach this aim, a factorial experimental design was carried out (a complete 2³ x 3¹ design) for every age studied (3 to 180 days). Through the variance analysis, the most significant factor on the response turned out to be the alkaline activator nature. The activator used, Na₂SiO₃ dot nH₂O+NaOH, was the factor that gave the highest mechanical strengths in all tests. The next most statistically significant factor was the activator concentration, followed by curing temperature, and, finally, the specific surface of the slag. The equations of the model describing the mechanical behaviour for flexural and compressive strengths and their relationships for each age studied were established.

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Title:

Alkali-activated slag mortars: Mechanical strength behaviour

Contributors:

Fernandez-Jimenez, A. (author) / Palomo, J.G. (author) / Puertas, F. (author)

Published in:

on Advances in Cement and Concrete, Engineering Foundation International Conference, 1998 ; 1313-1321

Cement and Concrete Research ; 29

Publication date:

1999

Size:

9 Seiten, 12 Quellen

ISSN:

DOI:

https://doi.org/10.1016/S0008-8846(99)00154-4

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

Mörtel , Druckfestigkeit , mathematisches Modell , Biegefestigkeit , Granulat , hydraulischer Zement , Schlackenzement , Natriumhydroxid , alkalische Aktivierung

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