Superthin Basalt Fiber as the Base of a Matrix of the Fire-Resistant Filling of Deformation Joints in Building Structures

V. A. Prusakov; Прусаков В. А.; M. V. Gravit; Гравит М. В.; Ya. B. Simonenko; Симоненко Я. Б.

doi:10.31857/S0132665122600522

Superthin Basalt Fiber as the Base of a Matrix of the Fire-Resistant Filling of Deformation Joints in Building Structures

Authors: Prusakov V.A.¹, Gravit M.V.², Simonenko Y.B.²
Affiliations:
1. St. Petersburg Polytechnic University
2. Компания “НПК ПРОМИЗОЛ”
Issue: Vol 49, No 1 (2023)
Pages: 89-96
Section: Articles
URL: https://rjsvd.com/0132-6651/article/view/663245
DOI: https://doi.org/10.31857/S0132665122600522
EDN: https://elibrary.ru/CGNYAH
ID: 663245

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Abstract

This article investigates the fire resistance of a structure with a fire barrier based on super-thin basalt fiber for the fire-resistant sealing of joints in reinforced concrete structures under conditions of alternating deformation. In European regulations, such fire barriers are specifically designed for use in expansion joints and operate in the compression, tension, and shear of the joint. In Russia, products and materials that perform the function of a fire barrier are not tested under conditions of alternating load. This article presents a test method for fire resistance for an expansion joint in a reinforced concrete structure. The results are obtained on the parameters of integrity (E) and heat-insulating capacity (I) for reinforced concrete slabs, followed by an increase in the width of the gap between the slabs and their shift relative to each other by +25% of at least 245 min.

Keywords

fire safety, fire resistance, building structures, expansion joint, basalt superthin fiber

References

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