Tests on intumescent paints for fire protection of existing steel structures

Bilotta, Antonio; Silva, Donatella de; Nigro, Emidio

doi:10.1016/j.conbuildmat.2016.05.144

Cited by 54 publications

(39 citation statements)

References 6 publications

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“…Since the single member is representative of the behavior of the global structure, thermomechanical analysis on the protective tie-rods were carried out, in order to assess the increase of the time resistance. The ISO834 curve was used for these analyses, and IC with thicknesses 600 and 1200 µm were considered, being experimental data available for these protectives [9]. By modeling the IC in the thermo-mechanical analysis, according to the procedure explained in [9], an increase of the fire resistance time under ISO834 curve can be observed in Fig 9a, both in the case of 600 µm and with 1200 µm (from 22 min to 62 min for 600 µm and to 79 min for 1200 µm).…”

Section: Analyses Resultsmentioning

confidence: 99%

“…The ISO834 curve was used for these analyses, and IC with thicknesses 600 and 1200 µm were considered, being experimental data available for these protectives [9]. By modeling the IC in the thermo-mechanical analysis, according to the procedure explained in [9], an increase of the fire resistance time under ISO834 curve can be observed in Fig 9a, both in the case of 600 µm and with 1200 µm (from 22 min to 62 min for 600 µm and to 79 min for 1200 µm). The Fig 9b shows also the results with natural fire curve; lower temperature are observed in the steel tie, and consequently an increase of the time resistance is obtained.…”

Section: Analyses Resultsmentioning

confidence: 99%

“…Being the technical documents of passive protection systems not available, the properties of the IC and of the ceiling are not known. In particular, an experimental program to characterize the IC, carried out on protected steel members taken directly from the structure, highlighted that the structure requires the design of a new protective, because the existing one is poorly efficient [9].…”

Section: Inspection and Level Of Knowledge Of Fire And Seismic Protecmentioning

confidence: 99%

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22.01: Fire and seismic assessment of an existing steel‐concrete composite structure

et al. 2017

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An existing steel-concrete composite structure is analyzed in order to assess its level of protection against both fire and earthquakes. The building has been designed and built more than thirty years ago, implying that both these hazards may not be adequately verified with respect to the current codes. As concerns the fire protection, intumescent coating (IC) was applied on steel members, while an original passive energy dissipation system was employed against seismic actions. In particular, special devices were introduced to sustain the floors, which are suspended at reticular beams on the top of concrete pillars. A Fire Safety Engineering approach has been adopted to assess the structural resistance to fire. To define the thermal properties of the protective, experimental tests were carried out on the existing IC and a new IC. Moreover, thermomechanical analyses of the existing steel structure were carried out, under different fire scenarios, selected according to the fire risk of the different occupancy class of the structure. Non-linearities and large displacements effects were taken into account. The seismic structural response has been investigated by implementing a dynamic nonlinear analysis according to the current Italian Code. In particular the seismic passive protection system, consisting in dissipative hysteretic devices combined with isolators, has been modelled as a parallel elastic and elasto-plastic springs' system. Mechanical parameters adopted for the analyses are the result of a wide bibliography study.

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Section: Analyses Resultsmentioning

confidence: 99%

Section: Analyses Resultsmentioning

confidence: 99%

Section: Inspection and Level Of Knowledge Of Fire And Seismic Protecmentioning

confidence: 99%

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22.01: Fire and seismic assessment of an existing steel‐concrete composite structure

et al. 2017

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“…As mentioned, the performance of the IFRC is based on the appropriate materials combination and the compatibility of the flame-retardant fillers with a polymer binder. Therefore, it is essential that the flame-retardant fillers provide good fire protective performance and fire retarding efficiency properties [19,20]. The grouping of aluminium hydroxide, Al(OH) 3 ; calcium silicate, CaSiO 3 ; magnesium hydroxide, Mg(OH) 2 ; chicken eggshell (CES) powder (bio-filler derived from CES waste); and calcium carbonate, CaCO 3 is used in this research project [20].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Intumescent Fire Protective Coating for Fire Rated Timber Door

Yin

Yew

et al. 2019

Coatings

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Intumescent flame-retardant coating (IFRC) provides a protective barrier to heat and mass transfer for the most efficient utilization of a wide variety of passive fire protection systems at the recent development. This article highlights the fire-resistance, physical, chemical, mechanical, and thermal properties of the IFRC using a Bunsen burner, furnace, Scanning Electron Microscope, freeze-thaw stability test, Instron Micro Tester, and thermogravimetric analysis (TGA) test. The five IFRC formulations were mixed with vermiculite and perlite for the fabrication of fire-resistant timber door prototypes in this research project. Additionally, the best fire-resistance performance of the fire-rated door prototype was selected and compared with a commercial prototype under the fire endurance test. An inventive fire-rated door prototype (P2), with a low density of 636.45 kg/m3, showed an outstanding fire-resistance rating performance, resulting in temperature reduction by up to 54.9 °C, as compared with that of the commercial prototype. Significantly, a novel fire-rated timber door prototype with the addition of formulating intumescent coating has proven to be efficient in preventing fires and maintaining its integrity by surviving a fire resistance period of 2 h.

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“…Researchers (Palm, Carlsson 2002) conducted research simulating the impact of acid rain on coatings. It was determined that in 30 years of natural aging under Italian climate conditions intumescent coatings no longer perform their function in practice (Bilotta et al 2016). Wang et al (2014) examined the aging mechanism of intumescent fire protective coatings affected by acid corrosion.…”

Section: Introductionmentioning

confidence: 99%

Peculiarities of Destruction Mechanism of Polymeric Intumescent Fire Protective Coatings

Mačiulaitis

Grigonis

Malaiškienė

et al. 2018

Journal of Civil Engineering and Management

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Abstract. The article describes the destruction mechanism of intumescent fire protective paint coatings at the time of their aging under the impact of simulated climatic factors. Steel plates covered in anti-corrosion varnishes and intumescent fire protective paint coatings of several types and different composition were used in the research, while certain samples were also additionally covered in protective coatings protecting from environmental effects. SEM, DTA and FT-IR researches were conducted on control samples and samples after aging. Aging was performed in 3 ways: according to regimes I and II in the laboratory and having stored them for 12 months under the outdoor conditions under the roof. The aging mechanism of materials was determined to be very similar when using different methods of aging: with increasing number of cycles, the extent of damage to the surfaces and their diversity increase. In all cases, chemical material changes were observed after artificial aging cycles compared to control samples. In aged samples, there were some new connections occurring, while others changed or disappeared judging from the number of waves and intensity of peaks, which shows that certain compounds form, while others change and disintegrate under the influence of environmental heat and mass exchange.

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Tests on intumescent paints for fire protection of existing steel structures

Cited by 54 publications

References 6 publications

22.01: Fire and seismic assessment of an existing steel‐concrete composite structure

22.01: Fire and seismic assessment of an existing steel‐concrete composite structure

Preparation of Intumescent Fire Protective Coating for Fire Rated Timber Door

Peculiarities of Destruction Mechanism of Polymeric Intumescent Fire Protective Coatings

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