Silikon Karbür Nanotüplerin (SICNT) Sıcak Karışım Asfaltın Suya Duyarlılığına ve Mekanik Özelliklerine Etkisi

Öz

Asfalt kaplamalar nemin etkisiyle zarar görmektedir. Sudan kaynaklanan bozulmalar ile dayanım kaybı oluşmaktadır. Asfalt karışımlarda sudan kaynaklanan bozulmaların önüne geçebilmek için soyulma önleyici malzemeler kullanılmaktadır. Bitüm modifikasyonu da sudan kaynaklanan bozulmaları önlemede etkili bir metottur. Bu amaçla, bu çalışmada, bitüm silikon karbür nanotüplerle (SiCNT) üç farklı oranda (ağırlıkça %1, %3 ve %5) modifiye edilmiştir. Modifikasyon gerçekleştirildikten sonra asfalt karışımlar Superpave tasarım yöntemine göre tasarlanmıştır. Silikon karbür ile modifiye edilmiş asfalt karışımların suya karşı duyarlılığı İndirekt Çekme Dayanımı testi ile belirlenmiştir. Sonuç olarak, SiCNT modifikasyonu iki oranda (%3 ve %5) şartname limitini sağlamıştır.

Anahtar Kelimeler

• Silikon karbür nanotüp,Bitüm modifikasyonu,İndirekt çekme dayanımı,Nem hassasiyeti

Effect of Silicon Carbide Nanotube (SiCNT) on the Mechanical Properties and Moisture Susceptibility of Hot Mix Asphalt

Öz

Asphalt pavements are damaged by moisture. Strength loss is caused by moisture damage. Anti-stripping agent is used to address this damage in asphalt mixtures. Bitumen modification is also effective method to prevent moisture damage. To this aim, in this study, bitumen was modified by silicon carbide nanotube (SiCNT) in three percentages (1%, 3% and 5%) by weight. After the modification effort was performed, asphalt mixtures were designed according to SuperpaveTM procedure. Indirect Tensile (IDT) Strength test was employed determining moisture damage in asphalt mixtures modified by SiCNT. As a result, moisture susceptibility of two percentages (3% and 5%) of SiCNT ensured the specification limit.

Anahtar Kelimeler

• Silicon carbide nanotube,Bitumen modification,Indirect tensile strength,Moisture susceptibility

Kaynakça

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