The Workability and Permanent Deformation Resistance of Pirina Modified Bitumens at High Temperatures
Küçük Resim Yok
Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Gazi Univ
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this study, the effect of pirina, which is an agricultural waste, on the workability and permanent deformation resistance of bituminous binders at high temperatures were investigated. For this purpose, firstly, modified bitumens were obtained by adding 5, 10, 15 and 20% by weight of pirina to pure B 160/220 bitumen. Physical properties of pure and modified bitumens are determined by penetration, softening point and ductility tests; fluidity and workability properties at high temperatures by the rotational viscometer (RV) test; the permanent deformation resistance of the binders by dynamic shear rheometer (DSR) test; their chemical characterizations were determined by scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis. According to the physical and RV test results, it was observed that the binders tended to harden, their viscosity decreased and the workability temperatures increased accordingly. In addition, it has been determined that the temperature sensitivity of the binders decreases with the addition of pirina. According to DSR test results, the resistance of pure bitumen against permanent deformations at 58 degrees C high temperature increased to 64 degrees C, especially by 15% due to the increase in the additive of pirina. According to the chemical characterization results, it was observed that the bitumen-pirina blend formed a homogeneous single-phase structure and the blend became an elastic structure despite hardening due to the cellulosic structure of the raw pirina. As a result, it was observed that the workability of the binders hardened with the pirina additive, but their resistance to permanent deformation at high temperatures increased.
Açıklama
Anahtar Kelimeler
Bitumen, pirina, modified bitumen, workability, permanent deformation resistance
Kaynak
Journal of Polytechnic-Politeknik Dergisi
WoS Q Değeri
N/A
Scopus Q Değeri
Cilt
25
Sayı
2
