Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

Yazarlar: Beyza FURTANA, Erkut YALÇIN, Baha Vural KÖK, Mehmet YILMAZ

Konular:İnşaat Mühendisliği

DOI:10.28948/ngumuh.561615

Anahtar Kelimeler:Modification,EVA,SBS,Bitumen

Özet: Although the bitumen used too few in the asphalt concrete it is significantly liable to the performance of pavement. For this reason bitumen is frequently modified in order to enhance the performance of asphalt mixtures. SBS is a widely used polymer modifier for asphalt binders to improve the performance properties of hot mix asphalt. SBS is nearly indispensable when the binder properties do not satisfy the specification requirements under hot service temperatures. In this study the performance of an alternative additive named as ethylene vinyl acetate (EVA) based resin (EBR) to SBS was investigated. The SBS contents were kept constant at 3% and EBR contents were 2%, 3% 4% and 5% by weight of base bitumen. Modified binders were produced by mixing a 50/70 penetration grade base bitumen with SBS and EBR. Penetration, softening point, rotational viscometer tests were conducted to base and modified binders and results were compared with each other. In conclusion it was determined that EBR content have to be more than 3% in order to obtain the same performance with 3% SBS modification. 3% EBR modification gave satisfactory performance in terms of temperature sensitivity, high temperature resistance and workability.

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