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Utilization of lignite ash in concrete mixture

Demirbas, A. / Karslioglu, S. / Ayas, A.

In this article 11 ashes from various Turkish lignite sources were studied to show the effects upon lignite ash quality for use as a mineral admixture in concrete. The lignite ashes were classified into two general types (Class A and Class B) based on total of silica, alumina, and iron oxide. Total content of the three major oxides must be more than 50 % for Class A lignite ash and more than 70 % for class B lignite ash. When 25 % of the cement was replaced by LA-1 (Class A) lignite ash, based on 300 kg/m³ cementitious material, the 28-day compressive strength increased 24.3 % compared to the control mix. The optimal lignite ash replacement was 25 % at 300 kg/m³ cementitious material.

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Utilization of lignite ash in concrete mixture

Demirbas, A. / Karslioglu, S. / Ayas, A.

In this article 11 ashes from various Turkish lignite sources were studied to show the effects upon lignite ash quality for use as a mineral admixture in concrete. The lignite ashes were classified into two general types (Class A and Class B) based on total of silica, alumina, and iron oxide. Total content of the three major oxides must be more than 50 % for Class A lignite ash and more than 70 % for class B lignite ash. When 25 % of the cement was replaced by LA-1 (Class A) lignite ash, based on 300 kg/m³ cementitious material, the 28-day compressive strength increased 24.3 % compared to the control mix. The optimal lignite ash replacement was 25 % at 300 kg/m³ cementitious material.

Utilization of lignite ash in concrete mixture

Demirbas, A. / Karslioglu, S. / Ayas, A.

In this article 11 ashes from various Turkish lignite sources were studied to show the effects upon lignite ash quality for use as a mineral admixture in concrete. The lignite ashes were classified into two general types (Class A and Class B) based on total of silica, alumina, and iron oxide. Total content of the three major oxides must be more than 50 % for Class A lignite ash and more than 70 % for class B lignite ash. When 25 % of the cement was replaced by LA-1 (Class A) lignite ash, based on 300 kg/m³ cementitious material, the 28-day compressive strength increased 24.3 % compared to the control mix. The optimal lignite ash replacement was 25 % at 300 kg/m³ cementitious material.

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Titel:

Utilization of lignite ash in concrete mixture

Weitere Titelangaben:

Einsatz von Braunkohlenasche in Betonmischungen

Beteiligte:

Demirbas, A. (Autor:in) / Karslioglu, S. (Autor:in) / Ayas, A. (Autor:in)

Erschienen in:

Cement and Concrete Research ; 25 ; 1610-1614

Erscheinungsdatum:

1995

Format / Umfang:

5 Seiten, 7 Tabellen, 24 Quellen

ISSN:

DOI:

https://doi.org/10.1016/0008-8846(95)00155-7

Medientyp:

Aufsatz (Zeitschrift)

Format:

Print

Sprache:

Englisch

Schlagwörter:

Braunkohle , Beton , Zement , Aluminiumoxid , Kohlenasche , mechanische Festigkeit , Druckfestigkeit , Portlandzement , Türkei , Additiv , Ersatzstoff , Sekundärrohstoff

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