Obtaining and modeling the relaxation modulus of self-healing asphalt mixtures

Autor: Ahmet Münir Özdemir, Bahadır Yılmaz
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Firat University Journal of Experimental and Computational Engineering, Vol 1, Iss 1, Pp 24-30 (2022)
Druh dokumentu: article
ISSN: 2822-2881
DOI: 10.5505/fujece.2022.43531
Popis: In this study, pure and self-healing asphalt mixture samples were obtained by adding capsules containing waste vegetable oil to mixtures at 0.25, 0.50, 0.75 and 1.00% ratios. Afterwards, creep test with a constant stress was carried out on the samples, and the resistance of asphalt mixtures against permanent deformation was investigated. Relaxation modulus values were obtained by using the creep compliance values that measured at the end of the experiment with mathematical transformations. Then, the relaxation modulus results were fitted to the Generalized Maxwell Model, which is a common model used to represent the viscoelastic properties of asphalt mixtures, and Prony series parameters were obtained. The results showed that the addition of capsule reduced the permanent deformation strength of the asphalt mixture. In addition, the curve fitting processes were successfully performed and the desired parameters were obtained with high accuracy.
Databáze: Directory of Open Access Journals