INVESTIGATION OF THE USE OF RECYCLED ASPHALT CONCRETE MATERIAL TO THE SURFACE LAYERS

Öz

In this study, Reclaimed Asphalt Pavement (RAP) were used in Hot Mix Asphalt (HMA) samples, stability and flow resistance and Indirect Tensile Strength Test (IDT) of HMA samples were investigated. Initially, optimum bitumen content of wearing course was determined by Marshall Stability test method and then RAP, 5 to 50 % in terms of total asphalt concrete samples weight was added to HMA samples at the predefined optimum bitumen content. Besides, control samples were performed and compared with the RAP added samples. Test results show that Reclaimed Asphalt Pavement (RAP) can be used in wearing course as an additive in accordance with Turkey General Directorate of Highways (GDH) specification limits. This paper demonstrates that the asphalt mixtures containing RAP performed at least like, or better than, that of conventional asphalt materials.

Anahtar Kelimeler

• Reclaimed Asphalt Pavement (RAP),Stability,flow resistance,Indirect Tensile Test,Impaired asphalt pavement material

GERİ KAZANILMIŞ ASFALT BETONU MALZEMESİNİN AŞINMA TABAKASINDA KULLANILABİLİRLİĞİNİN ARAŞTIRILMASI

Öz

Bu çalışmada Bitümlü Sıcak Karışım (BSK) numunelerinin içerisine çeşitli oranlarda kazanılmış asfalt betonu malzemesi (RAP) ilave edilerek, Stabilite, Akma ve İndirket Çekme (ITS) dayanımları incelenmiştir. Öncelikle aşınma tabakası için optimum bitüm miktarı Marshall metodu ile bulunmuş ve daha sonra optimum bitüm içeriğinde hazırlanan asfalt betonu numunelerine %5 ila %50 oranlarında RAP ilave edilmiştir. Bunun yanında RAP ilave edilmemiş asfalt betonu numuneler de teste tabii tutulmuş ve sonuçlar karşılaştırılmıştır. Test sonuçları RAP ilave edilmiş BSK numunelerinin stabilite ve akma ve İndirket Çekme Deneyi (ITS) yönünden Karayolları Teknik Şartnamesindeki limitler içerisinde Aşınma tabakasında kullanılabileceğini göstermiştir.

Anahtar Kelimeler

• Geri kazanılmış asfalt betonu malzemesi,Stabilite,Akma dayanımları,İndirket Çekme Deneyi,Bozulmuş asfalt kaplama malzemesi

Kaynakça

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