Numerical-experimental analysis of ceramic block masonry walls of different thickness at high temperatures

DOI: https://doi.org/10.21041/ra.v10i1.415
Keywords: fire resistance time, fire, compartmentation.

Abstract

The study discusses the fire resistance of vertical sealing systems composed of ceramic bricks with vertical holes at high temperatures. The masonry sealing construction system is widely used in the Brazilian construction market because it is a low cost and high productivity system compared to conventional elements. The results were obtained with finite element computational models, using the Ansys Mechanical software, calibrated by a real scale experimental test, determining the fire resistance time (FRT) for different block geometries. The computational analysis led to results that point to a limit in efficiency of the wall thickness increase in order to reach a high FRT in relation to the thermal insulation.

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References

Associação Brasileira de Normas Técnicas (1989). ABNT NBR 10636: Paredes divisórias sem função estrutural - Determinação da resistência ao fogo - Método de ensaio. Rio de Janeiro.

Associação Brasileira de Normas Técnicas (2001). ABNT NBR 5628: Componentes construtivos estruturais - Determinação da resistência ao fogo. Rio de Janeiro.

Associação Brasileira de Normas Técnicas (2013). ABNT NBR 15575: edificações habitacionais: desempenho. Rio de Janeiro.

Associação Brasileira de Normas Técnicas (2003). ABNT NBR 15220: Desempenho térmico de edificações. Rio de Janeiro.

Bai, G. et al. (2017). Study on the Thermal Properties of Hollow Shale Blocks as Self-Insulating Wall Materials. Advances in Materials Science and Engineering, v. 2017, p. 12.

Ehrenbring, H. Z., Quinino, U., Oliveira, L. S., Tutikian, B. F. (2019), Experimental method for investigating the impact of the addition of polymer fibers on drying shrinkage and cracking of concrete. Struct. Concr. 20, 1064–1075. doi:10.1002/suco.201800228.

European Commitee Standardization (2005). Eurocode 6: Design of masonry structures: Part 1-2: General rules – Structural fire design. Brussels.

Gil, A., Pacheco, F., Christ, R., Bolina, F. L., Khayat, K. H., Tutikian, B. F. (2017), Comparative study of concrete panels’ fire resistance. Aci Mater. J. 114, 755–762.

International Organization for Standardization (2014). ISO 834-11: Fire resistance tests - Elements of building construction - Part 11: Specific requirements for the assessment of fire protection to structural steel elements. Switzerland.

Lee, L. S. H., Jim, C. Y. (2017). Subtropical summer thermal effects of wirerope climber green walls with different air-gap depths. Building and Environment, v. 126, p. 1–12.

Marcatti, J., Coelho Filho, H. S., Berquó Filho, J. E. (2008), Compartimentação e afastamento entre edificações. In: SEITO, A. I. et al (Coord.). A segurança contra incêndio no Brasil. São Paulo: Projeto Editora.

Nguyen, T. D. et al. (2009), The behaviour of masonry walls subjected to fire: Modelling and parametrical studies in the case of hollow burnt-clay bricks. Fire Safety Journal, v. 44, n. 4, p. 629–641.

Nguyen, T. D., Meftah, F. (2012), Behavior of clay hollow-brick masonry walls during fire. Part 1: Experimental analysis. Fire Safety Journal, v. 52, p. 55–64.

Pacheco, F., Souza, R., Christ, R., Rocha, C., Silva, L., Tutikian, B. F. (2018), Determination of volume and distribution of pores of concretes according to different exposure classes through 3D microtomography and mercury intrusion porosimetry. Struct. Conc. 19, 1419–1427. doi:10.1002/suco.201800075.

Rigão, A. O. (2012), Comportamento de pequenas paredes de alvenaria estrutural frente a altas temperaturas. 142 f. Dissertação (Mestrado) - Curso de Engenharia Civil, Universidade Federal de Santa Maria, Santa Maria.

Zsembery, S., Lawrence, S. (2013), Manual 2 - The Properties of Clay Masonry. Think Brick. Austrália.

Published
2019-12-30
How to Cite
Bolina, F., Tutikian, B., Gonçalves, J., Souza, T., & Manica, G. (2019). Numerical-experimental analysis of ceramic block masonry walls of different thickness at high temperatures. Revista ALCONPAT, 10(1), 22 - 35. https://doi.org/10.21041/ra.v10i1.415
Issue
Vol. 10 No. 1 (2020)
Section
Applied Research

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