Some mechanical properties and decay resistance of wood impregnated with environmentally-friendly borates

Simsek, Hakan; Baysal, Ergun; Peker, Hüseyin

doi:10.1016/j.conbuildmat.2010.04.028

Cited by 47 publications

(53 citation statements)

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“…Several authors have analyzed the effect of introducing different protective substances to the wood interior. In some cases there are significant losses in mechanical properties, as in the modulus of elasticity (MOE) in southern pine treated with copper xyligen ) and the modulus of rupture (MOR) in Pinus sylvestris treated with environmentally friendly borates (Simsek et al 2010). These results coincide with findings showing reduced MOR in wood treated with waterborne preservatives (Forest Products Laboratory 2010).…”

Section: Introductionsupporting

confidence: 79%

Effect of Vacuum and Pressure Treatments on the Mechanical Properties and Moisture Balance of Wood from Pinus sylvestris

Villasante¹,

Laina²,

Vignote³

2016

BioResources

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Several works have analyzed the alteration in the mechanical strength of wood after the application of protective substances. However, it remains unclear whether the significant differences obtained are caused by the protective substances, the pressure and vacuum conditions used in the treatment, or the simultaneous effect of both. In this study, 123 wood samples from Pinus sylvestris were tested for bending, and 85 samples were tested for compression strength parallel to the grain. These samples were randomly distributed in three groups (treated with water pressure, water vacuum, and control samples simply submerged in water). The results indicated that there was no difference in mechanical properties between the treated and untreated samples. In contrast, significant differences were detected in equilibrium moisture after a prolonged drying process.

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Section: Introductionsupporting

confidence: 79%

Effect of Vacuum and Pressure Treatments on the Mechanical Properties and Moisture Balance of Wood from Pinus sylvestris

Villasante¹,

Laina²,

Vignote³

2016

BioResources

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“…They found that PHN imparted complete decay resistance against brown rot and white rot fungi Tyromycetes palustris and Coriolus versicolor, respectively. Simsek et al (2010) investigated decay resistance of Oriental beech wood impregnated with some borates such as ammonium pentaborate octahydrate (APBO), ammonium tetrafl uoroborate (ATFB), and sodium tetrafl uoroborate (STFB). Results indicated that borate-treated wood showed considerable resistance against decay fungus compared to that of untreated control specimen.…”

Section: Introduction 1 Uvodmentioning

confidence: 99%

“…They found that CSPG of both wood specimens impregnated with borates were lower than the untreated wood specimens. Simsek et al (2010) studied modulus of rupture (MOR) of Oriental beech wood impregnated with ammonium pentaborate octahydrate (APBO), ammonium tetrafl uoroborate (ATFB) and sodium tetrafl uoroborate (STFB). They found that MOR of borate-treated Oriental beech was lower than untreated wood.…”

Section: Introduction 1 Uvodmentioning

confidence: 99%

Some Physical and Mechanical Properties of Borate-Treated Oriental Beech Wood

Simsek

Baysal

2015

Drvna ind.

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“…La absorción se determinó con la fórmula (Ávila-Calderón et al 2012): La retención se determinó con la relación (Simsek et al, 2010): La densidad y el contenido de humedad de la madera fueron determinados con grupos de cinco probetas complementarias de cada especie con características similares y provenientes del mismo lote de probetas que se impregnaron.…”

Section: Materiales Y Métodosunclassified

“…Dhamodaran & Gnanaharan (2007), aplicando sales de boro y empleando un método de presión con una concentración de 6% en piezas de madera de Eucalyptus grandis, obtienen una retención de 3.70 kg/m 3 a 11.60 kg/m 3 . Simsek, Baysal & Peker (2010), empleando probetas de 0.02 m ´ 0.02 m ´ 0.36 m, con un proceso al vacío y siguiendo las recomendaciones de la norma ASTM D 1413-76, con concentraciones de sales de boro de 0.25% a 3%, reportan retenciones de 17.42 kg/m 3 para madera de Fagus orientalis y de 15.98 kg/m 3 para la de Pinus sylvestris. Tondi et al (2012), impregnando probetas de 0.025 m ´ 0.015 m ´ 0.05 m, utilizando un proceso de preservación específicamente diseñado y una concentración de sales de boro de 6%, encuentran retenciones de 2.88 kg/m 3 a 9.16 kg/m 3 para madera de Fagus sylvatica y de 3.25 kg/m 3 a 9.57 kg/m 3 para la de Pinus sylvestris.…”

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Retention and absorption of boron salts solution of ten mexican woods

Castellanos

Aguilar

2016

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RESUMENLas sales de boro son un agente protector para la madera con un amplio espectro en su acción fungicida e insecticida, de poca toxicidad, inodoras, incoloras e incombustibles, y su aplicación es una de las estrategias más efectivas de preservación. La presente investigación tuvo por objetivo determinar la densidad de la madera, la absorción y la retención de sales de boro de diez maderas mexicanas. Se propuso como hipótesis de trabajo que la capacidad de retención de sales de boro de la madera depende, principalmente, de la especie, y es independiente de la densidad y de la porosidad. Se prepararon 30 litros de solución de sales de boro con una concentración al 3%. Las probetas se impregnaron con el método baño caliente-frío. Se diseñó un experimento de análisis de varianza para comparar los valores medios de la densidad de la madera, de la absorción y de la retención, como las variables de respuesta, evaluadas para cada una de las diez especies de madera. La especie de madera fue considerada el factor de variación. La absorción de sales de boro varió entre 136 kg/m 3 y 476 kg/m 3 . Los valores promedio de retención de sales de boro para todas las especies fueron mayores que el límite inferior tóxico de retención comprendido en el intervalo de retención que va de 0.2 kg/m 3 a 4.7 kg/m 3 , reportado en trabajos anteriores. Se concluye que cada especie tiene una retención de sales de boro diferente, y la capacidad de absorción es particular a cada una de ellas y no está relacionada con su densidad. ABSTRACTBoron salts are a wood protector agent with a wide spectrum in their fungicidal and insecticide action and of low toxicity, odorless, colorless and nonflammable, and their application is one of the most effective preservation strategies. This research aims to determine the density of wood, absorption and retention of the boron salts of ten Mexican woods. The working hypothesis proposed in this investigation is that wood retention capacity of boron salts depends mainly on the species and is independent of its density and porosity. Thirty liters of boron salts solution with a concentration of 3 % were prepared, the wood specimens were impregnated by following the "hot-cold bath" method. It was designed an experiment that compared means of the density of wood, the absorption and the retention, as the response variables, assessed for each one of the ten wood species. Wood species was considered as the variation factor. Absorption of Boron salts varied between 136 kg/m 3 and 476 kg/m 3 . Average values of the boron salts retention for all species were higher than lower retention toxicity limit reported in previous researches (0.2 kg/m 3 to 4.7 kg/m 3 ). It was concluded that each species has different boron salts retention. Absorption capacity is specific to each species and it is not related to the wood density.

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Some mechanical properties and decay resistance of wood impregnated with environmentally-friendly borates

Cited by 47 publications

References 11 publications

Effect of Vacuum and Pressure Treatments on the Mechanical Properties and Moisture Balance of Wood from Pinus sylvestris

Effect of Vacuum and Pressure Treatments on the Mechanical Properties and Moisture Balance of Wood from Pinus sylvestris

Some Physical and Mechanical Properties of Borate-Treated Oriental Beech Wood

Retention and absorption of boron salts solution of ten mexican woods

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