Some Physical and Mechanical Properties of Impregnated Chestnut Wood with Natural and Chemical Agent Exposed to Outdoor Conditions

Abstract

Bu makaleye şu şekilde atıfta bulunabilirsiniz(To cite to this article): Yaşar M. ve Altunok M., "Some physical and mechanical properties of impregnated chestnut wood with natural and chemical agent exposed to outdoor conditions", Politeknik Dergisi, 22(2): 399-406, (2019).Erişim linki (To link to this article): http://dergipark.gov.tr/politeknik/archive ABSTRACT Wood preservatives have been widely used to extend the service life of wood. The most objectionable environment for wood is outdoor conditions. In this study, test specimens prepared from chestnut wood (Castanea sativa Mill) were impregnated with natural and chemical impregnation agent. It was aimed to determine the effect of outdoor conditions on physical and mechanical properties of wood material by keeping them under these conditions for one year. As natural impregnation material pine tannin and acorn tannins, as chemical impregnation material imersol aqua and timbercare aqua were used. The retention amount, air-dried density, bending strength, modulus of elasticity, compression strength parallel to fibers, adhesion strength parallel to fibers, screw withdrawal strength were determined. As a result, it can be said that the physical and mechanical test values can compare wood impregnated with natural impregnation materials to wood impregnated with chemical impregnation materials after one year exposed to outdoor conditions. Anahtar Kelimeler: Outdoor conditions, chestnut, pine tannin, acorn tannin, mechanical tests. Açık Koşullarına Bırakılan Doğal ve Kimyasal Maddelerle Emprenye Edilen Kestane Odununun BazıFiziksel ve Mekanik Özellikleri ÖZ Ahşap koruyucular, ahşabın kullanım ömrünü uzatmak için yaygın şekilde kullanılmaktadır. Ağaç için en sakıncalı ortam açık hava koşullarıdır. Bu çalışmada, kestane (Castanea sativa Mill) ağacından hazırlanan örnekler doğal ve kimyasal emprenye maddesi ile emprenye edilmiştir. Açık hava koşullarının ağaç malzemenin fiziksel ve mekanik özelliklerine etkisini, bir yıl boyunca bu koşullar altında tutarak belirlenmesi amaçlandı. Doğal emprenye materyali olarak çam taneni ve meşe palamudu taneni, kimyasal emprenye maddesi olarak imersol aqua ve timbercare aqua kullanılmıştır. Retensiyon miktarı, hava kurusu yoğunluk, eğilme direnci, elastikiyet modülü, liflere paralel basınç direnci, liflere paralel yönde yapışma direnci, vida tutma direnci belirlenmiştir. Sonuç olarak, doğal emprenye maddeleriyle emprenye edilen ahşap malzemelerin kimyasal emprenye maddeleri ile emprenye edilen ahşap malzemeler ile bir yıl süreyle açık hava koşulları altındaki değerlerin mukayese edilebilir düzeyde olduğu söylenebilir.

Emprenye ve Isıl İşlemin Ahşap Malzemenin Bazı Fiziksel ve Mekanik Özelliklerine Etkileri

“…Tannins can be obtained from the bark of mimosa, acorn, chestnut, sumac, tara, and bark of various pine species. Tannins are used in many different fields such as leather manufacturing, adhesives, additives to beverages, and medical applications [14,25,26,37]. In this study, tannins were dissolve in distille water at 80 °C to a concentration of 10%.…”

“…In another work, Yaşar and Altınok (2019) investigated effect of natural tannin solutions (pine, acorn) and and chemical impregnation (imersol aqua, timbercare aqua) on characteristic of woods. As a result, they reported that natural tannin solutions could be an alternative to chemical impregnation materials in wood samples exposed to outdoor conditions [26]. Tondi et al (2012) analyzed the changes in mechanical and fire properties of Scotch pine and European beech samples after impregnation with tannin-based chemicals.…”

Determination of modulus of elasticity and bending strength of wood material impregnated with nanoparticle silicon dioxide (SiO2)

“…The wood material which stays in natural conditions can get destroyed in under 5 years (except some certain wood species) (Ors and Keskin, 2001;Ozcifci, 2009;Tan and Peker, 2015a;Tan and Peker, 2015b;Keskin and Daglioglu, 2016). The service life of wood can increase with impregnation with wood preservative materials (Archer and Lebow, 2006;Hill, 2006;Tondi et al, 2012, Sandberg et al, 2017, Yasar and Altunok, 2019. Impregnation is the process of penetrating wood with substances with different contents with the purpose of preventing rotting, burning and dimensional work in wood material (Kurtoglu, 2000;Hill, 2006, Ayar, 2008Akgul and Apay, 2014a;Akgul and Apay, 2014b;Esteves et al, 2014.…”