The influence of high temperatures on selected strength properties of fine-aggregate fiber composite

openaccess, Vol. 617 (1) 2024 / czwartek, 25 stycznia, 2024

(Open Access)

DOI: 10.15199/33.2024.01.01

Głodkowska Wiesława, Lehmann Marek, Laskowska-Bury Joanna. 2024. The influence of high temperatures on selected strength properties of fine-aggregate fiber composite. Volume 617. Issue 1. Pages 1-6. Article in PDF file

Accepted for publication: 03.01.2024 r.

The paper presents an analysis of the influence of high temperature on selected mechanical properties of finely aggregated mineral composite with dispersed steel reinforcement. The designed fibrecomposite has properties similar to or better than ordinary concrete and can be successfully used to make load-bearing reinforced concrete elements. The change in compressive strength and residual tensile strength during bending of the fibrecomposite was determined at room temperatures and determined according to the fire curve imitating the temperature build-up during a real fire. The research program also included the assessment of the weight loss of fibrecomposite samples annealed in the furnace. Studies have shown that the addition of steel fibers to the composite mix in the amount of 1.2%contributes to the preservation of its mechanical properties when exposed to temperatures up to 550°C due to fire, and thus is able to improve its structural stability at high temperature. Steel fibers significantly improve the fire-retardant properties of the fine-aggregate composite.
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prof. dr hab. inż. Wiesława Głodkowska, Politechnika Koszalińska, Wydział Inżynierii Lądowej, Środowiska i Geodezji ORCID: 0000-0003-3719-5350
dr inż. Marek Lehmann, Politechnika Koszalińska, Wydział Inżynierii Lądowej, Środowiska i Geodezji ORCID: 0000-0002-1314-3014
dr inż. Joanna Laskowska-Bury, Politechnika Koszalińska, Wydział Inżynierii Lądowej, Środowiska i Geodezji ORCID: 0000-0002-0618-1370

dr inż. Marek Lehmann, Politechnika Koszalińska, Wydział Inżynierii Lądowej, Środowiska i Geodezji ORCID: 0000-0002-1314-3014

marek.lehmann@tu.koszalin.pl

Full paper:

DOI: 10.15199/33.2024.01.01

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