The partial fire protection of steel members: a comparative study

Šejna, Jakub; Dobrovolný, Patrik; Wald, František

doi:10.1108/jsfe-01-2023-0001

Cited by 3 publications

(4 citation statements)

References 45 publications

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“…Additional experiments were carried out based on the previous experiments performed by Šulc et al . (2022) and Šejna et al . (2023a, b) to determine the possible thermal properties of the H-cement, fire protection layer.…”

Section: Sample Preparationmentioning

confidence: 96%

“…The power setting of the burner placed in the furnace was used in accordance with previous experiments, e.g. Šejna (2021), Šejna et al . (2023a, b).…”

Section: Fire Experimentsmentioning

confidence: 99%

“…This method results in a possible membrane effect on the floor slab and provides the load-bearing capacity of the connection. This procedure was discussed in more detail by Šejna et al . (2023a, b), who summarized the possibilities of partial passive protection and its design.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, experiments were also conducted in a fire furnace to investigate the effect of adhesion to the concrete untreated surface. The results showed the possibility of using lightweight concrete or concrete with H-cement fireclay sand for fire protection of steel and concrete structures (Šejna et al ., 2023a).…”

Section: Introductionmentioning

confidence: 99%

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Application of hybrid cement in passive fire protection of steel structures

Šejna,

Šulc,

Šmilauer

et al. 2023

JSFE

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PurposeThe aim of this paper is to determine the thermal conductivity of a protective layer of alkali-activated cement and the possibility of performing fire protection with fireclay sand and Lightweight mortar. Unprotected steel structures have generally low fire resistance and require surface protection. The design of passive protection of a steel element must consider the service life of the structure and the possible need to replace the fire protection layer. Currently, conventional passive protection options include intumescent coatings, which are subject to frequent inspection and renewal, gypsum and cement-based fire coatings and gypsum and cement board fire protection.Design/methodology/approachAlkali-activated cements provide an alternative to traditional Portland clinker-based materials for specific areas. This paper presents the properties of hybrid cement, its manufacturability for conventional mortars and the development of passive fire protection. Fire experiments were conducted with mortar with alkali-activated and fireclay sand and lightweight mortar with alkali-activated cement and expanded perlite. Fire experiment FE modelling.FindingsThe temperatures of the protected steel and the formation of cracks in the protective layer were investigated. Based on the experiments, the thermal conductivities of the two protective layers were determined. Conclusions are presented on the applicability of alkaline-activated cement mortars and the possibilities of applicability for the protection of steel structures. The functionality of the passive fire layer was confirmed and the strengths of the mortar used were determined. The use of alkali-activated cements was shown to be a suitable option for sustainable passive fire protection of steel structures.Originality/valueEco-friendly fire protection based on hybrid alkali-activated cement of steel members.

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Section: Sample Preparationmentioning

confidence: 96%

“…The power setting of the burner placed in the furnace was used in accordance with previous experiments, e.g. Šejna (2021), Šejna et al . (2023a, b).…”

Section: Fire Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Application of hybrid cement in passive fire protection of steel structures

Šejna,

Šulc,

Šmilauer

et al. 2023

JSFE

Self Cite

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Experiments on fire-protected and hot-dip galvanised steel bolted connections

Firan,

Ghanbari-Ghazijahani,

Cheung

et al. 2024

Fire Safety Journal

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Modelling intumescent coatings for the fire protection of structural systems: a review

Lucherini,

de Silva

2024

JSFE

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PurposeIntumescent coatings are nowadays a dominant passive system used to protect structural materials in case of fire. Due to their reactive swelling behaviour, intumescent coatings are particularly complex materials to be modelled and predicted, which can be extremely useful especially for performance-based fire safety designs. In addition, many parameters influence their performance, and this challenges the definition and quantification of their material properties. Several approaches and models of various complexities are proposed in the literature, and they are reviewed and analysed in a critical literature review.Design/methodology/approachAnalytical, finite-difference and finite-element methods for modelling intumescent coatings are compared, followed by the definition and quantification of the main physical, thermal, and optical properties of intumescent coatings: swelled thickness, thermal conductivity and resistance, density, specific heat capacity, and emissivity/absorptivity.FindingsThe study highlights the scarce consideration of key influencing factors on the material properties, and the tendency to simplify the problem into effective thermo-physical properties, such as effective thermal conductivity. As a conclusion, the literature review underlines the lack of homogenisation of modelling approaches and material properties, as well as the need for a universal modelling method that can generally simulate the performance of intumescent coatings, combine the large amount of published experimental data, and reliably produce fire-safe performance-based designs.Research limitations/implicationsDue to their limited applicability, high complexity and little comparability, the presented literature review does not focus on analysing and comparing different multi-component models, constituted of many model-specific input parameters. On the contrary, the presented literature review compares various approaches, models and thermo-physical properties which primarily focusses on solving the heat transfer problem through swelling intumescent systems.Originality/valueThe presented literature review analyses and discusses the various modelling approaches to describe and predict the behaviour of swelling intumescent coatings as fire protection for structural materials. Due to the vast variety of available commercial products and potential testing conditions, these data are rarely compared and combined to achieve an overall understanding on the response of intumescent coatings as fire protection measure. The study highlights the lack of information and homogenisation of various modelling approaches, and it underlines the research needs about several aspects related to the intumescent coating behaviour modelling, also providing some useful suggestions for future studies.

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The partial fire protection of steel members: a comparative study

Cited by 3 publications

References 45 publications

Application of hybrid cement in passive fire protection of steel structures

Application of hybrid cement in passive fire protection of steel structures

Experiments on fire-protected and hot-dip galvanised steel bolted connections

Modelling intumescent coatings for the fire protection of structural systems: a review

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