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nalysis of the influence of the properties of building materials in
load-bearing sandwich structures on fire resistance
Katarína Košútová 1*, Linda Makovická Osvaldová 2
1 University of Žilina, Faculty of security engineering, Department of Fire engineering, Univerzitná 8215/1, 010 26 Žilina, Slovakia,
katarina.kosutova@uniza.sk
2 University of Žilina, Faculty of security engineering, Department of Fire engineering, Univerzitná 8215/1, 010 26 Žilina, Slovakia,
linda.makovicka@uniza.sk
* Corresponding author
Knowledge about the fire resistance of building materials is among the most important when choosing building
materials for construction (Hafke et al., 2022). However, the influence of individual properties of building
materials on the overall behaviour of the building structure in the event of a fire is not so well explored (Kontogeorgos
et al., 2016). In this contribution, we deal with the analysis of the behaviour of individual building materials in a
load-bearing sandwich structure during fire. In experimental studies, we examine the temperature development
itself, not only on the surface of the test sample, but also behind the individual layers of building materials that
make up the load-bearing sandwich structure. To determine the behaviour of the given materials during fire,
we used the test method according to the EN 1365-1 standard. The composition of the load-bearing sandwich
structure consists of the following building materials. And that is a universal plasterboard construction board,
thermal insulation material made of expanded polyurethane with a surface treatment of mineral felt, a layer of
mineral wool, and new types of fireproof boards complete the construction. The load-bearing capacity of the
sandwich structure is ensured by wooden posts. By choosing a suitable combination of building materials in the
load-bearing sandwich construction, we can ensure increased fire resistance. From the analysis of temperature
data obtained using thermocouples behind the layers in the load-bearing sandwich construction, we found a
temperature difference of up to 809 °C behind the exposed and unexposed material. In the contribution, we
discuss the influence of building materials on the resulting fire resistance of the load-bearing building structure.
Keywords: building materials, structures, fire resistance, analysis of properties
Acknowledgement: This research was financially supported by the project KEGA 020STU – 4/2021 Building an innovative
teaching laboratory for practical and dynamic education of students in the field of occupational safety and health.
REFERENCES
Haffke, M.; Pahn, M.; Thiele, C.; Grzesiak, S., 2022. Experimental Investigation of Concrete Sandwich Walls with Glass-Fiber-
Composite Connectors Exposed to Fire and Mechanical Loading. Applied Sciences, 12, 3872. https://doi.org/10.3390/app12083872
Kontogeorgos, D.; Semittelos, G.; Mandilaras, I.; Founti, M., 2016. Experimental investigation of the fire resistance of multi-layer
drywall systems incorporating Vacuum Insulation Panels and Phase Change Materials. Fire Safety Journal, 81, 8-16. https://doi.
org/10.1016/j.firesaf.2016.01.012
13–14 SEPTEMBER 2023 I IZOLA, SLOVENIA 23
load-bearing sandwich structures on fire resistance
Katarína Košútová 1*, Linda Makovická Osvaldová 2
1 University of Žilina, Faculty of security engineering, Department of Fire engineering, Univerzitná 8215/1, 010 26 Žilina, Slovakia,
katarina.kosutova@uniza.sk
2 University of Žilina, Faculty of security engineering, Department of Fire engineering, Univerzitná 8215/1, 010 26 Žilina, Slovakia,
linda.makovicka@uniza.sk
* Corresponding author
Knowledge about the fire resistance of building materials is among the most important when choosing building
materials for construction (Hafke et al., 2022). However, the influence of individual properties of building
materials on the overall behaviour of the building structure in the event of a fire is not so well explored (Kontogeorgos
et al., 2016). In this contribution, we deal with the analysis of the behaviour of individual building materials in a
load-bearing sandwich structure during fire. In experimental studies, we examine the temperature development
itself, not only on the surface of the test sample, but also behind the individual layers of building materials that
make up the load-bearing sandwich structure. To determine the behaviour of the given materials during fire,
we used the test method according to the EN 1365-1 standard. The composition of the load-bearing sandwich
structure consists of the following building materials. And that is a universal plasterboard construction board,
thermal insulation material made of expanded polyurethane with a surface treatment of mineral felt, a layer of
mineral wool, and new types of fireproof boards complete the construction. The load-bearing capacity of the
sandwich structure is ensured by wooden posts. By choosing a suitable combination of building materials in the
load-bearing sandwich construction, we can ensure increased fire resistance. From the analysis of temperature
data obtained using thermocouples behind the layers in the load-bearing sandwich construction, we found a
temperature difference of up to 809 °C behind the exposed and unexposed material. In the contribution, we
discuss the influence of building materials on the resulting fire resistance of the load-bearing building structure.
Keywords: building materials, structures, fire resistance, analysis of properties
Acknowledgement: This research was financially supported by the project KEGA 020STU – 4/2021 Building an innovative
teaching laboratory for practical and dynamic education of students in the field of occupational safety and health.
REFERENCES
Haffke, M.; Pahn, M.; Thiele, C.; Grzesiak, S., 2022. Experimental Investigation of Concrete Sandwich Walls with Glass-Fiber-
Composite Connectors Exposed to Fire and Mechanical Loading. Applied Sciences, 12, 3872. https://doi.org/10.3390/app12083872
Kontogeorgos, D.; Semittelos, G.; Mandilaras, I.; Founti, M., 2016. Experimental investigation of the fire resistance of multi-layer
drywall systems incorporating Vacuum Insulation Panels and Phase Change Materials. Fire Safety Journal, 81, 8-16. https://doi.
org/10.1016/j.firesaf.2016.01.012
13–14 SEPTEMBER 2023 I IZOLA, SLOVENIA 23
