Enhanced Resistance to Fire of the Bark-Based Panels Bonded with Clay

Tudor, Eugenia Mariana; Scheriau, Christoph; Barbu, Marius Cătălin; Réh, Roman; Krišťák, Ľuboš; Schnabel, Thomas

doi:10.3390/app10165594

Cited by 27 publications

(23 citation statements)

References 52 publications

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“…Bark has, besides low density, excellent thermal properties and very good acoustic properties together with natural resistivity against microorganisms and fire [ 53 , 91 , 92 , 93 ]. Another great advantage of bark is its property as a formaldehyde scavenger [ 94 , 95 , 96 ].…”

Section: Resultsmentioning

confidence: 99%

Thermophysical Properties of Larch Bark Composite Panels

et al. 2021

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The effects of using 100% larch bark (Larix decidua Mill) as a raw material for composite boards on the thermophysical properties of this innovative material were investigated in this study. Panels made of larch bark with 4–11 mm and 10–30 mm particle size, with ground bark oriented parallel and perpendicular to the panel’s plane at densities varying from 350 to 700 kg/m3 and bonded with urea-formaldehyde adhesive were analyzed for thermal conductivity, thermal resistivity and specific heat capacity. It was determined that there was a highly significant influence of bulk density on the thermal conductivity of all the panels. With an increase in the particle size, both parallel and perpendicular to the panel´s plane direction, the thermal conductivity also increased. The decrease of thermal diffusivity was a consequence of the increasing particle size, mostly in the parallel orientation of the bark particles due to the different pore structures. The specific heat capacity is not statistically significantly dependent on the density, particle size, glue amount and particle orientation.

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Section: Resultsmentioning

confidence: 99%

Thermophysical Properties of Larch Bark Composite Panels

et al. 2021

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“…This was valid for Cumaru, Ipe, and Kempas while Garapa and Merbau decline. This is probably due the fact that the latter two woods give the decomposition phenomenon composed formally from two processes [ 19 , 32 , 33 , 34 , 35 , 36 ].…”

Section: Discussionmentioning

confidence: 99%

Non-Isothermal Thermogravimetry of Selected Tropical Woods and Their Degradation under Fire Using Cone Calorimetry

2021

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For selected tropical woods (Cumaru, Garapa, Ipe, Kempas, Merbau), a relationship was established between non-isothermal thermogravimetry runs and the wood weight loss under flame during cone calorimetry flammability testing. A correlation was found for the rate constants for decomposition of wood in air at 250 and 300 °C found from thermogravimetry and the total time of sample burning related to the initial mass. Non-isothermal thermogravimetry runs were assumed to be composed from 3 theoretical runs such as decomposition of wood into volatiles itself, oxidation of carbon residue, and the formation of ash. A fitting equation of three processes was proposed and the resulting theoretical lines match experimental lines.

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“…The same problem occurs with low-density fiberboard (group B), which also has a poor mechanical property [86,87]. This is not the case of bark, which naturally has excellent resistance against microorganisms and very good fire-resistant properties [45,88].…”

Section: The Noise Reduction Coefficientmentioning

confidence: 99%

“…Bark can contribute to the modern construction philosophy: to use materials with a low environmental impact and a high proportion of recycled materials while maintaining the parameters of a healthy building [42,43]. Besides showing advantageous properties such as a low density, a high resistance against microorganisms and fire, a low thermal conductivity and excellent thermal diffusivity [44,45], bark also presents a high heat storage capacity [46][47][48]. Bark also acts as an excellent formaldehyde scavenger [49][50][51][52].…”

Section: Introductionmentioning

confidence: 99%

Acoustic Properties of Larch Bark Panels

Tudor

Krišťák

Barbu

et al. 2021

Forests

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The potential of tree bark, a by-product of the woodworking industry, has been studied for more than seven decades. Bark, as a sustainable raw material, can replace wood or other resources in numerous applications in construction. In this study, the acoustic properties of bark-based panels were analyzed. The roles of the particle size (4–11 mm and 10–30 mm), particle orientation (parallel and perpendicular) and density (350–700 kg/m3) of samples with 30 mm and 60 mm thicknesses were studied at frequencies ranging from 50 to 6400 Hz. Bark-based boards with fine-grained particles have been shown to be better in terms of sound absorption coefficient values compared with coarse-grained particles. Bark composites mixed with popcorn bonded with UF did not return the expected results, and it is not possible to recommend this solution. The best density of bark boards to obtain the best sound absorption coefficients is about 350 kg/m3. These lightweight panels achieved better sound-absorbing properties (especially at lower frequencies) at higher thicknesses. The noise reduction coefficient of 0.5 obtained a sample with fine particles with a parallel orientation and a density of around 360 kg/m3.

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Enhanced Resistance to Fire of the Bark-Based Panels Bonded with Clay

Cited by 27 publications

References 52 publications

Thermophysical Properties of Larch Bark Composite Panels

Thermophysical Properties of Larch Bark Composite Panels

Non-Isothermal Thermogravimetry of Selected Tropical Woods and Their Degradation under Fire Using Cone Calorimetry

Acoustic Properties of Larch Bark Panels

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