Elma ağacı budama yongalarının çimentolu yonga levha üretimi için alternatif ham malzeme olarak kullanılabilirliğinin incelenmesi

Öz

Elma ağacı budamasının, çimentolu yonga levha üretiminde alternatif ham malzeme olarak kullanımı araştırılmıştır. Nominal yoğunluğu 1400 kg/m3 ve ölçüleri 500×500×12 mm olan deneysel çimentolu yonga levhalar, Kızılçam ahşabı ile elma ağacı budama yongalarının farklı karışım oranlarını (100/0,75/25,50/50,25/75,0/100) kullanılarak laboratuvar şartlarında hazırlanmıştır. Temel özellikler; su emme, kalınlığa şişme, eğilme özellikleri ve vida çekme direnci TS-EN-312 standardının gerekliliklerine göre incelenerek değerlendirilmiştir. Çalışma sonuçları, çimentolu yonga levha karışımına elma budama yongası eklenmesinin test edilen özellikleri önemli ölçüde etkilediğini göstermiştir. Karışım içndeki elma budama oranının artışı, çimentolu yonga levhaların kalınlığa şişme ve emme değerlerini arttırırken mekanik özelliklerini azaltmıştır. %25 elma budaması içeren deney levhaları ise genel kullanım amaçlı çimentolu yonga levhalar için standartların gerektirdiği özellikleri sağlamaktadır. Elma ağacı budama yongaları çimentolu yonga levha üretimi için alternatif bir hammadde olabilir.

Anahtar Kelimeler

• Elma Budaması
• Çimentolu Yonga Levhalar
• Fiziksel ve Mekaniksel Özellikler

Investigation of the usability of apple tree pruning chips as an alternative raw material to produce cement bonded particleboard

Öz

The utilization of apple tree pruning as an alternative raw material to produce cement-bonded particleboard was investigated. Experimental cement-bonded particleboards measuring 500×500×12 mm with a nominal density of 1400 kg/m3 were prepared in laboratory conditions using different ratios (100/0,75/25,50/50,25/75,0/100) of apple tree pruning chips mixed Red Pine wood chips. The following basic properties required by the TS EN 312 standards were evaluated; water absorption, thickness swelling, bending properties, and screw withdrawal strength. Results of the study indicate that the addition of apple pruning in the mix of cement-bonded particleboard significantly influences the properties tested. Mechanical properties of the tested boards decreased while absorption and thickness swelling values of the cement-bonded particleboard were increased as the portion of apple pruning in the mixture was increased. Experimental boards which include apple tree pruning up to 25 % still meet properties required by the standards for general purpose-use cement-bonded particleboards. Apple tree pruning chips may be an alternative raw material for the manufacturing of cement-bonded particleboard.

Anahtar Kelimeler

• Apple pruning
• Cement-bonded particleboard
• Physical and mechanical properties

Kaynakça

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