A histological investigation of Oriental beech wood decayed byPleurotus ostreatusandTrametes versicolor

2015 ◽  
Vol 45 (5) ◽  
pp. 349-357 ◽  
Author(s):  
E. Bari ◽  
O. Schmidt ◽  
R. Oladi
Keyword(s):  
Beech Wood ◽  
Histological Investigation ◽  
Oriental Beech

scholarly journals Thermal degradation of oriental beech wood impregnated with different inorganic salts

2019 ◽  
pp. 0-0 ◽  
Author(s):  
Elif Vargun ◽  
Ergun Baysal ◽  
Turkay Turkoglu ◽  
Mehmet Yuksel ◽  
Hilmi Toker
Keyword(s):  
Thermal Degradation ◽  
Beech Wood ◽  
Inorganic Salts ◽  
Oriental Beech

scholarly journals ECO-DESIGN: IMPACTS OF BLEACHING CHEMICALS AND VARNISHES ON THE AMOUNT OF CARBON DIOXIDE IN THE COMBUSTION OF ORIENTAL BEECH (FAGUS ORIENTALIS LIPSKY)

Wood Research ◽  
2021 ◽  
Vol 66 (3) ◽  
pp. 379-390
Author(s):  
Ahmet C. Yalinkilic ◽  
Eyup Aksoy ◽  
Musa Atar ◽  
Hamza Cinar ◽  
Hakan Keskin
Keyword(s):  
Carbon Dioxide ◽  
Beech Wood ◽  
Combustion Process ◽  
Combustion Source ◽  
Fagus Orientalis ◽  
Flame Combustion ◽  
Oriental Beech ◽  
Fagus Orientalis Lipsky ◽  
Water Based ◽  
Combustion Tests

This study was carried out to determine the effects of bleaching chemicals and varnishes on the amount of carbon dioxide (CO2) in the combustion of oriental beech (Fagus orientalis Lipsky). For this purpose, samples of Oriental beech prepared according to ASTM D 358 contain 18% R1 = (NaOH + H2O2), R2 = (NaOH + Ca(OH)2 + H2O2), R3 = (Na2S2O5 + H2C2O4), R4 = (NaSiO3 + H2O2), R5 = (KMnO4 + Na2S2O5 + H2O2) solution groups, after bleaching with solution groups, water based, synthetic, polyurethane and acrylic varnish were applied according to ASTM D 3023 and combustion tests were carried out in accordance with ASTM E 160-50. Gas measurements were made with the SIGMA 74172 NSU flue gas device during the combustion process. As a result, in respect to the burning types; the highest amount of CO2 (ppm) was found in the self-combustion (8.468 ppm) while the lowest was obtained from the flame combustion source (4.599 ppm). In respect to the types of bleaching; the highest in R5 (7.458 ppm) and the lowest in R3 (4.059 ppm) were found. According to the varnish types; the highest value was found in the synthetic varnish (8.261), and the lowest value was found in the acrylic varnish (4.772 ppm). According to combustion type + bleaching solution + varnish type interaction, the highest values were found for without flame combustion (II) + R3 + Sn (18.40 ppm) and lowest for flame source combustion (I) + R5 + Pu (0.600 ppm). Consequently, the highest values for combustion gases were found in samples of oriental beech wood samples treated with water-based varnish with R1 solution. According to this, in terms of human health and life safety, possibility of fire in places, R3 solution and acrylic varnish may be used in the related industries.

Mechanical properties and chemical composition of beech wood exposed for 30 and 120 days to white-rot fungi

Holzforschung ◽  
2015 ◽  
Vol 69 (5) ◽  
pp. 587-593 ◽  
Author(s):  
Ehsan Bari ◽  
Hamid Reza Taghiyari ◽  
Behbood Mohebby ◽  
Carol A. Clausen ◽  
Olaf Schmidt ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Beech Wood ◽  
White Rot Fungi ◽  
White Rot ◽  
Chemical Components ◽  
Fungal Decay ◽  
Oriental Beech ◽  
Impact Bending ◽  
Decay Tests

Abstract The effects of exposing specimens of Oriental beech [Fagus sylvatica subsp. orientalis (Lipsky) Greuter and Burdet] to the white-rot fungi Pleurotus ostreatus (Jacq.: Fr.) Kummer and Trametes versicolor (L.: Fr.) Pilát strain 325 have been studied concerning the mechanical properties and chemical composition in terms of carbohydrates, cellulose, and lignin. Biological decay tests were carried out in accordance with the EN 113 standard specifications for 30 and 120 days. P. ostreatus had nearly the same deteriorating effects on the mechanical properties and chemical composition as that caused by T. versicolor. High and significant correlations were found between some mechanical properties with chemical components; for instance, the correlation coefficient (R2) between impact bending and carbohydrate content was about 0.96. The changes of components influence the various mechanical properties to a different degree. Incipient fungal decay caused severe changes for impact bending and carbohydrate loss. Several other properties declined at 120-day exposure time, such as the hardness, compression strength parallel to grain, and cellulose and lignin losses.

scholarly journals Thermal analysis of Oriental beech wood treated with some borates as fire retardants

2016 ◽  
pp. 0-0
Author(s):  
Ismail Hakki Uner ◽  
Ilyas Deveci ◽  
Ergun Baysal ◽  
Turkay Turkoglu ◽  
Hilmi Toker ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Beech Wood ◽  
Fire Retardants ◽  
Oriental Beech

scholarly journals Mechanical Properties of Impregnated and Heat Treated Oriental Beech Wood

BioResources ◽  
2016 ◽  
Vol 11 (4) ◽  
Author(s):  
Turkay Turkoglu ◽  
Ergun Baysal ◽  
Mehmet Yuksel ◽  
Huseyin Peker ◽  
Cevdet Sacli ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Beech Wood ◽  
Oriental Beech ◽  
Heat Treated

scholarly journals Effect of accelerated weathering test on selected properties of bamboo, Scots pine and Oriental beech wood treated with waterborne preservatives

2019 ◽  
Vol 70 (4) ◽  
pp. 391-398
Author(s):  
Elif Topaloglu
Keyword(s):  
Scots Pine ◽  
Compression Strength ◽  
Modulus Of Elasticity ◽  
Beech Wood ◽  
Mechanical Tests ◽  
Modulus Of Rupture ◽  
Accelerated Weathering ◽  
Oriental Beech ◽  
Static Modulus ◽  
The Difference

This paper investigates the changes in density, compression strength parallel to grain, static modulus of rupture and modulus of elasticity of untreated (control) and waterborne-treated bamboo (Phyllostachys bambusoides), Scots pine (Pinus sylvestris) and Oriental beech (Fagus orientalis) specimens subjected to accelerated weathering using an accelerated weathering chamber for 672 hours. Wolmanit-CB (CCB), tanalith-E (Tan-E), amine copper quat-1900 (ACQ) and boric acid-borax (BB) were used as waterborne preservatives. The retention value of bamboo specimens was lower than that of wood specimens due to the difference in anatomical structure of bamboo. The value of density, compression strength parallel to grain, static modulus of rupture and modulus of elasticity of treated bamboo and wood were generally higher than those of untreated specimens after accelerated weathering. ACQ treatment generally provided the best protection against weathering in all mechanical tests for both bamboo and wood specimens, while CCB treatment provided an effective protection against weathering in compression strength for Oriental beech. BB treatment provided the least protection against weathering for bamboo and wood specimens compared to other waterborne preservatives.

scholarly journals The Effect of Artificial Weathering on Surface Properties of Thermally Modified Oriental Beech Wood

2021 ◽  
Vol 72 (3) ◽  
pp. 273-278
Author(s):  
Turkay Turkoglu ◽  
Huseyin Peker ◽  
Mustafa Kucuktuvek ◽  
Caglar Altay ◽  
Ahmet Gunduz ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Surface Properties ◽  
Beech Wood ◽  
Thermal Modification ◽  
Surface Parameters ◽  
Fagus Orientalis ◽  
Artificial Weathering ◽  
Color Changes ◽  
Oriental Beech ◽  
Better Than

The study aimed to determine some surface parameters such as surface roughness and color changes of thermally modified Oriental beech (Fagus orientalis L.) wood samples after 750 hours of artificial weathering. The results of the study showed that artificial weathering led to an increase in surface roughness of Oriental beech wood. Thermal modification interval of 210 °C - 230 °C gave a smoother surface than unmodified samples after artificial weathering. Artificial weathering caused darker, reddish, and yellowish tone of unmodified and thermally modified Oriental beech wood. According to the study fi ndings, surface properties of thermally modified Oriental beech wood were better than those of unmodified Oriental beech.

scholarly journals Some Physical characteristics of thermally modified oriental- beech wood

2014 ◽  
pp. 0-0 ◽  
Author(s):  
Ergun Baysal ◽  
Saban Kart ◽  
Hilmi Toker ◽  
Selim Degirmentepe
Keyword(s):  
Beech Wood ◽  
Physical Characteristics ◽  
Oriental Beech
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