Investigation of the Effect of Curing Time on Mechanical Properties of Thin Spray-on Liners

Öz

This study presents the investigation of mechanical properties of a polymer based surface support material known as thin spray-on liner (TSL) s, by performing direct tensile and deformability tests. Although mechanical properties such as tensile strength, tensile modulus (Young’s modulus), elongation at break percentage, modulus of elasticity and Poisson’s ratio of TSL’s which are getting worldwide popularity are determined in the previous studies, the effect of curing time on these properties are presented in this study for the first time in the literature. Since these experiments are not widely conducted in the mining field, preparation of the test set-up and samples, and the test conditions that should be paid attention are mentioned in detail. With the help of the acquired equations, researchers/ companies will be able to estimate the time required for a polymer based TSL to reach the required mechanical properties and they will have a quantitative idea on TSL’s behavior on the long run.

Anahtar Kelimeler

• Thin spray-on liner (tsl),Curing time,Surface support,Direct tensile,Deformability,Tensile strength,Modulus of elasticity,Poisson’s ratio

Püskürtme İnce Kaplamaların Mekanik Özelliklerinin Kür Süresine Göre Değişiminin İncelenmesi

Öz

Bu çalışma püskürtme ince kaplama (PİK) olarak tanımlanan polimer bazlı bir yüzey tahkimatı malzemesinin mekanik özelliklerinin direk çekme ve deformasyon deneyleri ile saptanmasını içermektedir. Dünya genelinde yaygın olarak kullanılmaya başlanan PİK’lerin çekme dayanımı, çekme modülü, yenilgide uzama yüzdesi, elastik modülü ve Poisson oranı gibi mekanik özellikleri bilinmesine rağmen bu değerlerin kür süresine bağlı olarak nasıl bir değişim gösterdikleri ilk kez bu çalışmada sunulmuştur. Ayrıca bu tip deneyler madencilik alanında sıklıkla yapılmadığı için deney düzeneğinin ve test numunelerinin hazırlanması, deneylerde dikkat edilmesi gereken koşullardan da detaylı bir biçimde bahsedilmiştir. Bu çalışma sonucunda elde edilen eşitlikler yardımıyla araştırmacı/ kullanıcı, polimer bazlı PİK malzemesinin istenen mekanik özelliğe ulaşabileceği süreyi kestirebilecek ve PİK’lerin uzun dönem mekanik davranışlarına ilişkin niceliksel fikir sahibi olabileceklerdir.

Anahtar Kelimeler

• Püskürtme ince kaplama (pik),Kür süresi,yüzey tahkimat,Direk çekme,deformasyon,Çekme dayanımı,Elastik modül,Poisson oranı

Kaynakça

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