Fire resistance behaviour of GFRP-polyurethane composite sandwich panels for building floors

Proença, M.; Garrido, Mário; Correia, João R.; Gomes, M. Glória

doi:10.1016/j.compositesb.2021.109171

Cited by 26 publications

(5 citation statements)

References 32 publications

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“…In practice, thermal decomposition occurs as the properties of a polymeric material undergo changes under the influence of elevated temperatures. Indeed, thermal energy causes vibration in the chemical bond of polymers, and whenever this vibration exceeds the chemical bond strength, it leads to bond ruptures and thermal degradation of materials 37 . The thermal stability of prepared composites was determined using the TGA analysis and the results are presented in Fig.…”

Section: Resultsmentioning

confidence: 99%

Development of a novel sandwich-structured composite from biopolymers and cellulose microfibers for building envelope applications

Dadras Chomachayi,

Blanchet,

Hussain

et al. 2023

Sci Rep

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A novel sandwich-structured composite was developed from the surface layers of polyhydroxyalkanoate (PHA) and the interlayer of polylactic acid (PLA)/cellulose microfibers (CMF) composite. Moreover, CMF was chemically modified via a sol–gel process to improve the compatibility between the natural reinforcement and the polymer matrix. According to the obtained results, the modified CMF exhibited a highly hydrophobic characteristic (contact angel value of approximately 118°), and they were homogeneously dispersed in the PLA matrix. The results of the thermogravimetric analysis indicated that the sandwich composites reinforced with the modified CMF showed improvement in thermal stability. Regarding the mechanical properties, the incorporation of the natural reinforcement into sandwich composites increased the values of tensile modulus and strength of materials. The water vapor permeability of sandwich composites increased with the addition of untreated fibers; however, the composites reinforced with the modified CMF showed superior barrier performance than that of untreated CMF. In addition, a durability test was performed to determine the effect of accelerated aging on the properties of sandwich composites. The results demonstrated that the mechanical and barrier properties of composites incorporated with untreated CMF decreased after the accelerated aging, whereas the composites reinforced with the modified CMF experienced the least change.

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Section: Resultsmentioning

confidence: 99%

Development of a novel sandwich-structured composite from biopolymers and cellulose microfibers for building envelope applications

Dadras Chomachayi,

Blanchet,

Hussain

et al. 2023

Sci Rep

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“…Paper [3] describes an experimental study on the fire resistance of composite floor sandwich panels made of glass fiber reinforced polymer (GFRP) surfaces and a polyurethane foam core subjected to a standard fire and mechanical loading scenario. Three full-scale sandwich specimens were tested: an unprotected specimen and two specimens protected by calcium silicate (CS) plates attached to or suspended from the underside of the panel to form an air cavity.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Establishing patterns in reducing fire-dangerous properties of sip panels fire-protected with reactive coating

Tsapko,

Likhnyovskyi

et al. 2024

EEJET

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An issue related to using SIP panels for building structures is to ensure their stability and durability during operation in wide ranges. Therefore, the object of research was the change in the properties of wood-polymer material in case of fire and its protection when applied with a reactive coating capable of forming a pinocoke layer under the influence of high temperature on the coating. It has been proven that in the process of thermal action on the fire-resistant coating, the heat insulation process of SIP panels involves the formation of soot-like products on the surface of the material. Thus, under the action of the radiation panel on the surface of the OSB sample, after 120 s of thermal exposure, the process of intensive formation of a layer of foam coke, which thermally insulated the wood-polymer material, began; instead, after the radiation panel was exposed to the fire-resistant polystyrene foam sample, the process of destruction began at a temperature of about 100 °C polystyrene foam. When determining the flammability of a fire-resistant SIP panel, it was established that the temperature of the flue gases during the tests was no more than 110 °C, the length of the damaged sample did not exceed 460 mm. At the same time, the mass loss did not exceed 200 g, and independent combustion of the SIP panel sample did not occur despite the high temperature. According to these data, the SIP panel, fire-resistant with a reaction coating, belongs to group G1 (low flammability) and is a non-flammable material. The practical significance is that the results were taken into account during the design of buildings from SIP panels. So, there are reasons to assert the possibility of targeted regulation of the fire protection processes of SIP panels through the use of reactive coatings capable of forming a protective layer on the surface of the material that inhibits the rate of heat transfer

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“…The tensile properties (EN ISO 527 [ 31 ]) presented in Table 3 were obtained using a minimum of 6 specimens (thickness: 6 mm; width: 25 mm; length: 250 mm). The compressive and in-plane shear properties (ASTM D6641 [ 32 ] and ASTM D5379 [ 33 ]), assessed by [ 34 ], are presented in Table 4 and Table 5 , respectively. The mechanical characterization included the evaluation of the tensile and compressive properties in the longitudinal and transverse directions of the pultruded GFRP profile.…”

Section: Materials Hybrid Sandwich Panel Experimental Programme and T...mentioning

confidence: 99%

Flexural Creep Response of Hybrid GFRP–FRC Sandwich Panels

et al. 2022

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This work was developed within the scope of the research project “Easyfloor—Development of composite sandwich panels for building floor rehabilitation”, which aims at developing an innovative hybrid sandwich panel as an alternative construction system to conventional floor solutions, mainly for building rehabilitation. The developed hybrid sandwich panel is composed of a top face layer of steel-fibre-reinforced self-compacting concrete (FRC), a core of polyurethane (PUR) closed-cell foam, a bottom face sheet, and lateral webs of glass-fibre-reinforced polymer (GFRP). Full-scale experimental tests on the developed sandwich panels were carried out to characterize their short- and long-term (creep) flexural behaviour. The present work includes a detailed description of the developed panels and the experimental programme carried out and presents and discusses the relevant results. The experimental results showed an almost linear behaviour up to failure. The creep tests were carried out for a period of 180 days, using a creep load equal to 20% of its ultimate loading capacity. An average creep coefficient of 0.27 was obtained for this period. The composed creep model used to simulate the sandwich panel’s creep deflections by considering the individual viscoelastic contributions was able to predict the observed structural response with good accuracy.

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Fire resistance behaviour of GFRP-polyurethane composite sandwich panels for building floors

Cited by 26 publications

References 32 publications

Development of a novel sandwich-structured composite from biopolymers and cellulose microfibers for building envelope applications

Development of a novel sandwich-structured composite from biopolymers and cellulose microfibers for building envelope applications

Establishing patterns in reducing fire-dangerous properties of sip panels fire-protected with reactive coating

Flexural Creep Response of Hybrid GFRP–FRC Sandwich Panels

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