Steel elements with timber fire protection - experiment and numerical analysis

Abstract

Steel structural elements are sensitive to elevated temperatures, while timber elements have good thermal insulation properties. Timber material can fulfill the role of fire protection of steel members. The effect of the protection is demonstrated on an experiment with three beams with different levels of the protection, placed into a horizontal furnace. The experimental task was also numerically analysed with standard computational approach given by the Eurocode [1, 2], which leads to an interesting comparison, as the calculation is supposed to provide higher temperatures and larger deformations compared to the experimental data.

Application of hybrid cement in passive fire protection of steel structures

“…Preliminary results (Daxner, 2016) have demonstrated the superior resistance of lightweight mortars made from alkali-activated cement when compared to mortars made of equivalent gypsum binder or aluminate cements. Pilot tests for a larger experiment were carried out on a laboratory burner ( Sulc et al, 2021). Alkali-activated cements bring advantage in generally lower chemically-bound water in reaction products, therefore fire exposure should be less detrimental to conventional materials (Shi et al, 2006).…”

“…Additional experiments were carried out based on the previous experiments performed by Sulc et al (2022) and Sejna et al (2023a, b) to determine the possible thermal properties of the H-cement, fire protection layer. In the basic research, the samples were tested with a laboratory Bunsen burner, the production of samples for the tests in the small-scale furnace is presented below.…”

“…Additional experiments were carried out based on the previous experiments performed by Šulc et al . (2022) and Šejna et al .…”

“…However, it is brittle, which significantly affects the process of making mixtures with H-cement. If the mixture is mixed for a long time or is not mixed gently, the expanded perlite is crushed into smaller particles (Šulc et al ., 2022). The formulation was determined with a water/binder ratio of 0.77, and the Stachement 508 plasticizer was chosen.…”