Wood-based building components: what have we learned?

Morrell, Jeffrey J.

doi:10.1016/s0964-8305(02)00052-5

Cited by 33 publications

(24 citation statements)

References 8 publications

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“…Wood-based composites have received increased attention in recent years due to improvements in building designs and protection methods (Morrell 2002;Terzi et al 2017). Besides increased performance against biodegradation, proper protection technologies against fire are also needed for these materials to perform more reliably under conditions suitable for thermal degradation (Morrell 2002) as well as to expand into new markets.…”

Section: Introductionmentioning

confidence: 99%

“…Besides increased performance against biodegradation, proper protection technologies against fire are also needed for these materials to perform more reliably under conditions suitable for thermal degradation (Morrell 2002) as well as to expand into new markets. A number of studies have suggested that boron compounds can be effectively used to increase the resistance of wood-based composites against fire (Tsunoda 2001;Baysal et al 2007;Yalinkiliç et al 2007;Wang et al 2008;Kurt et al 2012;Pedieu et al 2012;Tondi et.…”

Section: Introductionmentioning

confidence: 99%

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Thermal Degradation of Particleboards Incorporated with Colemanite and Common Boron-based Fire Retardants

Terzi

2018

BioResources

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Fire-resistance and thermal degradation were evaluated for particleboards incorporated with colemanite and common boron-based fire retardants (zinc borate and boric acid:borax mixture). The main purpose of this study was to suggest an alternative fire retardant to be used in particleboards with low cost and considerably lower environmental impact compared to common boron-based fire retardants. For this purpose, the colemanite mineral was chosen as a raw boron mineral because of its good fire performance demonstrated previously in wood-plastic composites. The test compounds were incorporated into the furnish during the particleboard manufacturing process. Fire performance tests and thermal degradation analysis were then performed in the treated particleboard specimens. Mass loss calorimeter tests were applied to determine the oxidative thermal degradation properties of the produced particleboards, whilst thermogravimetric analyses were used to evaluate the non-oxidative thermal behavior of the particleboards. The lowest peak heat release rate and the highest activation energy values were recorded for the boric acid:borax mixture-incorporated particleboards at a loading level of 10%. Overall the results showed that colemanite had a lower fire-retardant property in the particleboards compared to the common boron-based compounds tested in the study.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal Degradation of Particleboards Incorporated with Colemanite and Common Boron-based Fire Retardants

Terzi

2018

BioResources

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“…dos agentes deterioradores que atuam na madeira, os bióticos são os de maior importância (cAvAlcANTE, 1982), uma vez que a madeira é susceptível a uma variedade de organismos xilófagos. Bactérias podem colonizar e deteriorar madeiras, porém, segundo Belie et al (2000) e Morrell (2002), os principais agentes xilófagos deterioradores de madeiras são fungos e insetos, cuja ocorrência acontece em função de condições criadas durante a construção do edifício e por falta de manutenção. As propriedades de resistência a esses ataques variam entre diferentes espécies, em uma mesma espécie ou, mesmo, em diferentes partes de uma mesma peça madeira.…”

Section: Abreu L B Et Alunclassified

Avaliação não destrutiva de estruturas de madeiras em edifício histórico de Tiradentes, MG

Abreu

Lima

Rabelo

et al. 2013

CERNE

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Problemas relacionados à durabilidade da madeira são comumente encontrados em estruturas de edificações históricas. Medidas de preservação e conservação devem ser adotadas, a fim de se evitar perdas e substituições que descaracterizam as construções. Métodos não destrutivos para a detecção de deteriorações podem ser utilizados, a fim de embasar decisões e aumentar a longevidade do patrimônio histórico. Nesse contexto, este trabalho foi realizado com o objetivo de realizar ensaios não destrutivos para inferir sobre a integridade de uma viga e um pilar originais da construção do Sobrado Ramalho, edifício histórico de Tiradentes, MG. Foram utilizados os equipamentos stress wave timer e resistógrafo. Amostras das peças foram retiradas para análises de densidade. Os resultados mostraram que, em ambas as estruturas, para cálculo dos módulos de elasticidade dinâmicos, não houve diferença significativa na aplicação do stress wave timer nos alinhamentos estudados. Não houve diferença significativa entre as direções de aplicação do resistógrafo no pilar, por ele ser aparentemente íntegro, de seções regulares, praticamente quadradas, e por não sofrer carregamento excêntrico. Já na viga houve diferença significativa, supostamente pelo fato de ela possuir trincas na sua linha de tração. Os equipamentos, pouco conhecidos no meio técnico conservacionista de patrimônio, permitem metodologias promissoras para inspeção de estruturas de madeira em serviço.

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“…The capillary-cellular structure of wood results in its easy deformability under squeezing stresses. During pressing, f is modified from 0.5 to 1.45 g/cm 3 . 28 The processing of PWCs in an extruder and their subsequent pressing can essentially change the wood filler characteristics.…”

Section: Influence Of Pwc Processing On the Wood Filler Characteristicsmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Polymer-wood composites (PWCs) based on thermoplastic polymers and wood chips are a kind of polymeric material that uses organic fillers. [3][4][5][6][7][8][9][10] PWCs bring together the properties of polymers and wood and processable in goods by methods that are typical for polymers: extrusion, pressing, and molding. [7][8][9][10][11][12] PWCs have been studied intensively as an innovative alternative to already known materials that may contribute to the reduction of vegetal biomass waste and prevent pollution with plastic waste.…”

Section: Introductionmentioning

confidence: 99%

Structure and properties of polymer–wood composites based on an aliphatic copolyamide and secondary polyethylenes

Mamunya

Zănoagă²,

Myshak

et al. 2006

J of Applied Polymer Sci

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ABSTRACT:Composite materials based on an aliphatic copolyamide and a secondary polyethylene, as thermoplastic matrices, and wood chips as filler were obtained and characterized. The influence of different factors (polymeric matrix type, fractional composition and geometrical characteristics of wood filler, processing parameters and ratio polymer/wood) on the properties of polymer-wood composites (PWCs) was studied. It was demonstrated that the packing factor F has an essential influence on the properties of PWCs: increasing F values determines an improvement in mechanical properties of these materials. Mechanical properties, thermal behaviour, morphological and diffusion characteristics of the analyzed composites were evaluated through specific methods and reported herein. Morphological and DSC data confirmed the presence of strong interface interactions between polymer and wood. The diffusion characteristics of PWCs showed that the diffusion coefficient D essentially depends on filler content in composites.

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Wood-based building components: what have we learned?

Cited by 33 publications

References 8 publications

Thermal Degradation of Particleboards Incorporated with Colemanite and Common Boron-based Fire Retardants

Thermal Degradation of Particleboards Incorporated with Colemanite and Common Boron-based Fire Retardants

Avaliação não destrutiva de estruturas de madeiras em edifício histórico de Tiradentes, MG

Structure and properties of polymer–wood composites based on an aliphatic copolyamide and secondary polyethylenes

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