The behaviour of masonry walls subjected to fire: Modelling and parametrical studies in the case of hollow burnt-clay bricks

Nguyen, Thê-Duong; Meftah, Fékri; Chammas, R.; Mébarki, Ahmed

doi:10.1016/j.firesaf.2008.12.006

Cited by 70 publications

(71 citation statements)

References 7 publications

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“…While this happens the behaviour of the material gain in ductility. The reduction in modulus of elasticity of the mortar reaches 90% at 600 °C and at 900° C the loss is 100% (8).…”

Section: Sobre El Morteromentioning

confidence: 97%

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Variación del módulo de Young de un elemento de fábrica de ladrillo sometido a altas temperaturas

Maciá¹,

Rolando²

2012

Mater. construcc.

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SUMMARYIn order to understand the thermal behavior of the masonry elements submitted to high temperatures we need to know the variation of their thermal properties with regard to the temperature. Submitted to high temperatures clay brick masonry presents thermomechanical effects (as the variation of Young's modulus, the thermal expansion of the unit and the mortar, spalling, losses of resistance…) as well as variation of the properties of the material as result of its degradation. In this article the variation of the module of elasticity of the unit and the mortar is described with regard to high temperatures according to the state of the knowledge. In this article is also exposed the results obtained from the experimental program carried out on elements of clay brick masonry submitted to high temperatures in order to observe the variation of Young's module related to temperature.

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“…While this happens the behaviour of the material gain in ductility. The reduction in modulus of elasticity of the mortar reaches 90% at 600 °C and at 900° C the loss is 100% (8).…”

Section: Sobre El Morteromentioning

confidence: 97%

“…Mientras sucede esto el comportamiento del material gana en ductilidad. La disminución del Módulo de Elasticidad del mortero alcanza el 90% a los 600 ºC y a 900 ºC la disminución es del 100% (8).…”

Section: Sobre El Morterounclassified

Variación del módulo de Young de un elemento de fábrica de ladrillo sometido a altas temperaturas

Maciá¹,

Rolando²

2012

Mater. construcc.

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“…Moreover, the tests by contrast analyze (9)(10)(11)(12)(13) Estudio experimental de perfiles de temperatura en elementos de fábrica cerámica sometidos a altas temperaturas Experimental analysis of temperature profiles in ceramic brickwork elements subjected to high temperatures realizados a elementos de fábrica presentan gran disparidad de tamaños y formas que impiden la comparación de los resultados obtenidos.…”

Section: State Of Knowledgeunclassified

Estudio experimental de perfiles de temperatura en elementos de fábrica cerámica sometidos a altas temperaturas

Maciá

Rolando

2013

Mater. construcc.

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This article discusses heat transfer through a brick element in order to know the thermal behavior of onedimensional brickwork masonry samples exposed to high temperatures.The object of the tests is to build time-temperature curves according to different thermal steps in transient to experimentally determine the temperature profiles in the interior of a wall.Through this study, it is possible to demonstrate absolute moisture of a factory item from 300 °C (variation of temperatures in the interior of the element), avoid the associated phenomenon of evaporation of water during the thermal process as well as to obtain profiles of temperatures that help calculate the cross section of a factory element subjected to high temperatures.

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“…Some geometric characteristics of the system, like voids, spaces and internal dimensions, have a strong influence on the fire resistance of the wall, due to the interference on the predominant heat transfer between the vertical divisions inside the blocks (NGUYEN et al, 2009). …”

Section: Introductionmentioning

confidence: 99%

Comparative study of fire resistance and acoustic performance of ceramic brick walls in concern to NBR 15575 in residential buildings in Brazil

Klippel-Filho¹,

Prager²,

Silva³

et al. 2018

DYNA

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After the publication of NBR 15575 (ABNT, 2013) standard, it became necessary that the constructive systems used in residential buildings go through verification processes concerning the performance requirements. Considering the security requirements, it is necessary to evaluate the fire resistance of vertical sealing systems. Within the scope of habitability, the standard specifies that these systems must have an adequate acoustic performance. Regarding this scenario, this study has the purpose of evaluate the performance of two non-structural vertical sealing systems in ceramic bricks by comparing two different layouts of horizontal air gaps. Therefore, laboratory tests were performed, following the prescriptions of NBR 10636 (ABNT, 1989) and ISO 10140-2 (ISO, 2010). It was verified that the system with higher air gaps number had a better performance on fire resistance, and that the acoustic performance was very similar between the two systems.Keywords: laboratory test; vertical sealing systems; acoustic performance; fire resistance; ABNT NBR 15575-4:2014.Estudio comparativo de resistencia al fuego y desempeño acústico de paredes en bloques cerámicos en cuestión de NBR 15575 en edificios residenciales de Brasil Resumen Con la publicación de la norma NBR 15575 (ABNT, 2013), ha sido necesario que los sistemas constructivos utilizados en edificios residenciales se sometiesen a ensayos para el cumplimiento de los requisitos de desempeño. En el ámbito de los requisitos de seguridad solicitados por la norma, existe la necesidad de la evaluación de la resistencia al fuego de los sistemas de aislamiento vertical. Dentro de la habitabilidad, la norma recomienda que estos sistemas tienen un desempeño acústico adecuado. Dentro de este escenario, el objetivo de este trabajo es evaluar el desempeño acústico de dos sistemas de pared compuestos por diferentes tipos de bloques cerámicos con agujeros horizontales. Para este análisis, fueron realizados ensayos de laboratorio de acuerdo con las normas NBR 10636 (ABNT, 1989) y ISO 10140-2 (ISO, 2010). Se verificó que el sistema con mayor densidad presentó desempeño sensiblemente mejor acerca la resistencia al fuego, con desempeño prácticamente idéntico en el análisis del aislamiento acústico.Palabras clave: ensayos de laboratorio; sistema de aislamiento vertical; desempeño acústico; resistencia al fuego; ABNT NBR 15575-4:2014.

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The behaviour of masonry walls subjected to fire: Modelling and parametrical studies in the case of hollow burnt-clay bricks

Cited by 70 publications

References 7 publications

Variación del módulo de Young de un elemento de fábrica de ladrillo sometido a altas temperaturas

Variación del módulo de Young de un elemento de fábrica de ladrillo sometido a altas temperaturas

Estudio experimental de perfiles de temperatura en elementos de fábrica cerámica sometidos a altas temperaturas

Comparative study of fire resistance and acoustic performance of ceramic brick walls in concern to NBR 15575 in residential buildings in Brazil

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