The Effects of Nano Expanded Vermiculite on Asphalt Binder Properties
15th Advances in Civil Engineering Congress, Gazimagusa, Kıbrıs (Kktc), 6 - 08 Eylül 2023, ss.839-848, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Basıldığı Şehir: Gazimagusa
- Basıldığı Ülke: Kıbrıs (Kktc)
- Sayfa Sayıları: ss.839-848
- Süleyman Demirel Üniversitesi Adresli: Evet
Özet
Nanomaterials are preferred in pavement construction due to their properties such as having small sizes and large surface areas. As a type of nanomaterial, nano clays are just one of the materials which can enhance the properties and performances of bituminous binder and consequently various asphalt mixtures. So, this study investigates the effects of nano expanded vermiculite which is a clay mineral on physical properties of bituminous binder. Nano expanded vermiculite was used to modify reference bitumen (50/70) in the ratios of 1, 2 and 3%. Physical properties such as penetration, softening point, temperature susceptibility, ductility and viscosity of reference and modified binders were determined and compared. The storability of modified binders was investigated with storage stability test. In addition, Vialit, Nicholson Stripping and California Stripping tests were performed to evaluate adhesion performances and stripping resistances of samples. Results of tests showed that the usage of nano expanded vermiculite decreases penetration and increases softening point, temperature-dependent susceptibility and viscosity. In addition, it was seen that nano expanded vermiculite additive used in the modification is suitable in terms of storability. The rise in additive ratio in bitumen decreased slightly adhesion performance. However, it can be said that mixtures containing nano expanded vermiculite modified binders can perform better in terms of stripping resistance in the presence of water and under the influence of traffic loads. According to the obtained results, it has been seen that modification of bitumen with nano expanded vermiculite can increase the resistance of asphalt binders to hot climate conditions.