Comparison of SBS and Elvax/Elvaloy modified asphalt mixtures

SOLAK H., İSKENDER E., AKSOY A., İSKENDER C., ALTUNTAŞ H. D.

3RD INTERNATIONAL CIVIL ENGINEERING & ARCHITECTURE CONFERENCE, Trabzon, Türkiye, 12 - 14 Ekim 2023, cilt.1, sa.1, ss.1761-1772

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 1
  • Doi Numarası: 10.31462/icearc.2023.sme852
  • Basıldığı Şehir: Trabzon
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.1761-1772
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

Purpose: The aim of the research was to compare the mechanical properties and economic aspects of asphalt mixtures

with SBS and Elvax/Elvaloy modified bitumen.

Study design/methodology/approach: SBS-modified bitumen and Elvax/Elvaloy-modified bitumen were prepared in

a high-shear mixer. SBS was used at a dosage of 5%, which is a commonly used proportion. Elvax and Elvaloy were

added to the bitumen at weight proportions of 0.8% and 1%, respectively, based on experience. Dense-graded asphalt

concrete design was performed, and the produced asphalt mixture samples were subjected to repeated creep, indirect

tensile strength, and Modified Lottman tests. The asphalt mixtures were evaluated for deformation, low-temperature

cracking, and resistance to moisture damage. Additionally, an economic comparison was made between SBS-modified

bitumen and Elvax/Elvaloy-modified bitumen.

Findings: Based on the mechanical tests, it was observed that the modified bitumen mixtures yielded comparable results

and exhibited significant improvement in mechanical properties compared to the control mixture. In terms of economic

comparison, it was concluded that Elvax/Elvaloy-modified bitumen was more cost-effective than SBS-modified

bitumen.

Originality/value: Considering the performance of SBS and Elvax/Elvaloy-modified bitumen mixtures, it is understood

that they can be used interchangeably. However, due to the price advantage of Elvax/Elvaloy-modified bitumen, it is

evaluated that it can be preferred.

Keywords: SBS; Elvax/Elvaloy Modified Bitumen; Echonomical Evaluation; Mechanical Properties.