High Temperature Composite of Aluminous Cement with Addition of Metakaolin and Ground Bricks Dust

Abstract:

The following article deals with the study of mechanical properties of aluminous cement composites exposure to high temperatures. The newly designed mixtures that resist the action of high temperatures 1000 °C find their application in various fields of industrial production or in the form of fire wall for protection bearing structures. All the mechanical properties such as compressive strength and tensile strength in bending were measured on samples 160x40x40 mm. These samples were exposed to temperatures 600 °C and 1000 °C and one group of samples was reference and stayed in laboratory condition. Aluminous cement unlike the common Portland cement keeps sufficient strength even after high temperature exposure. For ensuring required ductility the basalt fibers were added to the mixture. In an effort to use of secondary raw materials as a replacement for cement as well as a suitable binder was used metakaolin and ground brick dust. Very convenient characteristics of these components are their latent hydraulic potential that makes interesting hydration products.

• Periodical: Applied Mechanics and Materials (Volume 486)
• Pages: 406-411
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.486.406
• Online since: December 2013
• Authors: Ondřej Holčapek, Pavel Reiterman, Petr Konvalinka
• Keywords: Aluminous Cement, Basalt Fiber (BF), Compressive Strength, Ground Brick Dust, High-Temperature, Metakaolin (MK), Tensile Strength in Bending

References

[1] Sičáková A. a kol, New generation cement concretes – Ideas, Design, Technology and Applications, Košice, ISBN 987-80-553-0040-5J, (2008).

[2] J. S. Huo, Y. M. He, L. P. Xiao, B. S. Chen, Experimental study on dynamic behaviours of concrete after exposure to high temperatures up to 700 °C, Materials and Structures, (2012).

DOI: 10.1617/s11527-012-9899-x

[3] O. Bahr, P. Schaumann, B. Bollen, J. Bracke, Young´s modulus and Poisson´s ratio of concrete at high temperatures: Experimental Investigations, Materials and Design, (2013).

DOI: 10.1016/j.matdes.2012.07.070

[4] Collepardi, M.: Modern Concrete, ISBN 987-80-87093-75-7, Information centre ČKAIT Prague, (2009).

[5] S. W. Artementko, Polymer composite materials made from carbon, basalt and glass fibers, Structure and properites, Fiber chemistry, Vol. 35, 226 – 229, (2003).

[6] Static and fatigue characterization of new basalt fibre reinforced composites. S. Colombo, L. Vergani. M Burman, Composites Structures, Pabes 1165-1174, (2012).

DOI: 10.1016/j.compstruct.2011.10.007

[7] P. Konvalinka, J. Litoš, D. Jandeková, Volume Changes of Cement Pastes Using Metakaolin: Proceeding of the 50th Annual Conference on Experimental Stress Analysis, Prague, ISBN 978-80-01-0506-6, (2012).

[8] T. Kulovaná, E. Vejmelková, P. Konvalinka, M. Ondráček, M. Sedlmajer, R. Černý, Mechanical Properties of Concrete with Pozzolanic Admixture: Proceedings of Thermophysics 2012, ISBN 978-80-214-4599-4, (2012).

[9] Czech Standard CSN EN 196-1 Methods of testing cement – Part 1: Determination of strength, (2005).

[10] K. Venkatesh, M. Kodur, High-Temperature Properties of Concrete for Fire Resistance Modeling of Structures, ACI Materials Journal/September-October, (2008).