Dernières publications et brevets sur la résistance au feu

. Dernières publications et brevets sur la résistance au feu. Résistance au feu

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Il s'agit de notre dernière sélection de publications et de brevets mondiaux en anglais sur la résistance au feu, parmi de nombreuses revues scientifiques en ligne, classées et axées sur la résistance au feu, l'indice de résistance au feu, la résistance au feu, le coupe-feu, l'amortisseur de feu, la barrière coupe-feu, le rat de feu et le revêtement intumescent.

Influence of Temperature-Induced Porosity Evolution on Heat Transfer Resistance

Published on 2025-05-22 by Taher Hafiz, James Covello, Gary E. Wnek, Stephen Hostler, Edrissa Gassama, Yen Wei, Jiujiang Ji @MDPI

Abstract: This study investigated the thermal performance of reduced super intumescent (RSI) coating, focusing on the correlation between porosity evolution and thermal conductivity under elevated temperature conditions. Porosity development was quantified using scanning electron microscopy (SEM) combined with MATLAB-based image analysis, achieving a maximum porosity of 62% after 60 min of exposure. Thermal degradation was characterized using thermogravimetric analysis (TGA), which recorded a mass loss of[...]


Our summary: Influence of Temperature-Induced Porosity Evolution on Heat Transfer Resistance. Study on thermal performance of reduced super intumescent (RSI) coating, correlation between porosity evolution and thermal conductivity, quantification of porosity development, thermal degradation characterization, and evaluation of fire protection efficiency.

porosity evolution, thermal conductivity, heat transfer resistance, thermal degradation

Publication

A Comprehensive Review

Published on 2025-05-22 by Paulina Dziomdziora, Piotr Smarzewski @MDPI

Abstract: Ultra-high-performance concrete (UHPC) has emerged as a revolutionary material in structural engineering due to its exceptional mechanical properties and durability. This review comprehensively examines the influence of hybrid fiber compositions on UHPC, focusing on mechanical performance and resistance to environmental degradation. Hybrid fibers, which combine steel and synthetic and basalt fibers, improve compressive, tensile, and flexural strengths by bridging microcracks and limiting macrocr[...]


Our summary: A Comprehensive Review of the influence of hybrid fiber compositions on the mechanical performance and resistance to environmental degradation of ultra-high-performance concrete. Hybrid fibers improve compressive, tensile, and flexural strengths by bridging microcracks and limiting macrocrack propagation, with steel fibers showing significant improvements in ductility and load-bearing capacity.

ultra-high-performance concrete, hybrid fibers, mechanical properties, durability

Publication

The Role of Reinforcement and Matrix in Providing Strength and Fire Resistance

Published on 2025-05-21 by Mohammed Meiirbekov, Assem Kuandyk, Mukhammed Sadykov, Meiir Nurzhanov, Nurmakhan Yesbolov, Berdiyar Baiserikov, Ilyas Ablakatov, Laura Mustafa, Botagoz Medyanova, Arman Kulbekov, Sunkar Orazbek, Abussaid Yermekov @MDPI

Abstract: This study addresses the need for thermomechanically robust materials for high-temperature environments by investigating fabric-reinforced composites produced through polymer infiltration and thermal pressing using phenol-formaldehyde (PF) and epoxy (ER) resins. Experimental validation was required due to the lack of comparative data across different textile reinforcements under identical conditions. Seven technical fabrics—carbon, aramid, basalt, silica, fiberglass, asbestos, and [...]


Our summary: Study on fabric-reinforced composites for high-temperature environments using PF and ER resins, mechanical testing of carbon, aramid, basalt, silica, fiberglass, asbestos, and carbon/aramid hybrid fabrics, trade-offs between mechanical strength and thermal protection in fabric-resin combinations

reinforcement, matrix, strength, fire resistance

Publication

Cast-in-place through-penetration firestop device

Patent published on the 2025-05-21 in EP under Ref EP4556772 by HILTI AG [LI] (Tecson Joshua [us], Stroike Chad [us])

Abstract: A cast-in pass-through firestop device, comprising:a hollow tubular body comprising a first and a second overlapping tubular body part (10, 20);a bayonet locking mechanism, for adjusting the overlap, comprising:a key pin radially projecting from the first tubular body part,a key passage radially recessed in the second tubular body part,the key passage comprising at least two first sections being arranged in different planes perpendicular to the principal axis, and a second section arranged at le[...]


Our summary: Hollow tubular body with bayonet locking mechanism for adjusting overlap, sealing ring with sealing ridge, inlay made of intumescent firestop material.

firestop, cast-in-place, through-penetration, device

Patent

Enhancing Performance Through Waste Recycling

Published on 2025-05-17 by Avishek Chanda, Muhammad Khusairy Bin Bakri, Rajan Adhikari, Vikram Yadama @MDPI

Abstract: The construction sector’s increasing eco-consciousness is driving the need for higher-performance wood-based engineered products from underutilized timber resources, such as small-diameter trees from hazardous fuel treatments of our forests. Strand-based products, including oriented strand board (OSB) and lumber (OSL), are widely used. However, hot-pressing during their manufacturing generates approximately 10% waste, which includes a substantial amount of resinated strands that ar[...]


Our summary: Enhancing performance through waste recycling by utilizing re-resinated waste strands from strand-based panel production to improve mechanical properties, fire resistance, and recyclability.

waste recycling, engineered products, strand-based panels, dimensional stability

Publication

Dual Flame-Retardant and Curing-Agent Effects of Phytic Acid–Guanazole as an Additive in Fire-Protective Coatings for Wood

Published on 2025-04-25 by Xue Zheng, Yongjin Zou, Cuili Xiang, An Wei, Yuhong Wei, Lixian Sun @MDPI

Abstract: Recent research has focused on developing environmentally friendly flame-retardant coatings to improve the fire resistance of wood. In this study, phytic acid–guanazole (PG), a dual-functional compound synthesized through an ionic reaction between phytic acid and guanazole, was added to KH550-modified urea–formaldehyde resin (KUF) as both a curing agent and flame retardant. The −PO43− groups from phytic acid act as an acid source to acceler[...]


Our summary: Phytic acid-guanazole enhances fire resistance in wood coatings by acting as a dual flame-retardant and curing agent. The compound accelerates char formation and releases non-combustible gases, improving flame retardancy. Additionally, it reduces curing temperature, strengthens char layers, and outperforms conventional tannic acid in fire resistance.

flame-retardant, curing agent, fire-protective coatings, wood

Publication

Experimental Investigation of Fire—Technical Characteristics of Selected Flame Retardants for the Protection of Wooden Structures

Published on 2025-02-06 by Patrik Mitrenga, Miroslava Vandl�?kov�, Milan Kon�rik @MDPI

Abstract: This study evaluates selected flame retardants on the basis of their influence on the change of fire-technical parameters of soft and hard woods (spruce and oak) during exposure to a flame heat source. The parameters evaluated were mass loss, mass loss rate and depth of the charred layer. The experiments were carried out on simple test equipment on which the samples were exposed to direct flame while their mass was monitored. The measured data and their statistical evaluation showed a significan[...]


Our summary: This study evaluates the technical characteristics of selected flame retardants on soft and hard woods, analyzing mass loss, mass loss rate, and depth of charred layer. Results show significant differences between inorganic salt-based and intumescent flame retardants, with the latter showing higher efficiency in increasing fire resistance.

flame retardants, fire-technical parameters, wooden structures, experimental investigation

Publication

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Patent published on the 2024-10-30 in UA under Ref UA128835 by INSTITUTE FOR SCINTILLATION MATERIALS OF NAT ACADEMY OF SCIENCES OF UKRAINE [UA] (Rebrova Nadija Vasylivna [ua], Horbacheva Tetjana Yevheniyivna [ua], Kudin Oleksandr Mykhajlovych [ua], Andrjushchenko Ljubov Andriyivna [ua], Borysenko Vitalij Hryhorovych [ua], Horoneskul' Marianna Mykolayivna [ua], Myroslav Sprynskyy [pl])

Abstract: The invention concerns luminescent compositions with a long afterglow and can be used for equipment of firefighters-rescuees, as well as for special purpose clothing items. Fluorescent composition for a protective coating contains, masses. THE PERCENTAGE OF: luminophor SrAl2O4:Eu, Dy - 35-45, diatom bisiloxanezem plate shape - 2.2-3,3, needle-shaped microvolastonite - 5.0-11.0, binding polydimethylsiloxane elastomer - the rest. The application of the invention provides a fluorescent composition [...]


Our summary: The invention relates to luminescent compositions for protective coatings used by firefighters-rescuees and special purpose clothing items, providing high intensity and duration of post-glow with thermal and fire resistance.

luminescent compositions, protective coating, firefighters-rescuees, fluorescent composition

Patent

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    Sujets abordés : fire resistance, fire-rated, fire-rating, firestop, fire damper, fire barrier, intumescent coating, thermal performance, porosity evolution, thermal conductivity, mechanical properties, ultra-high-performance concrete, reinforcement, matrix, strength, fire protection efficiency, waste recycling, and flame-retardant..

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