Evaluation of the Effect of Recycled Fibers on Physical and Rheological Properties of Asphalt Binder

Authors
Hammin Chobdar 1
Amin Farajollahi 2
Alireza Ameli 1
1 Department of Civil Engineering, Malard Branch, Islamic Azad University, Malard, Tehran, Iran.
2 Department of Civil Engineering, Malard Branch, Islamic AzadUniversity, Malard, Tehran, Iran.
10.22034/road.2024.198129
Abstract
In order to investigate the effect of the percentage of nanoparticles, storage time and storage temperature on the storage stability of bitumen modified by nanoparticles, storage tests, softening point tests and dynamic shear rheometer 1 (DSR) tests were used to evaluate the characteristics of two types of bitumen modified with nanotitanium dioxide (TiO2). Became The results showed that the softening point, fracture temperature, dynamic shear viscosity and |šŗ∗|/sin(š›æ) of bitumen’s increase with the percentage of nanoparticles. The storage stability of bitumens decreased with the percentage of nanoparticles. The effect of storage time on the storage stability of bitumen’s was significant when the storage time was more than 48 hours. In addition, the storage stability of bitumen’s at low temperatures was better than at high temperatures. The reduction of nanoparticle size due to nanoparticle aggregation could not effectively increase the storage stability of nanoparticle-modified bitumen.
Keywords
Nanomaterials
Cracking
Bitumen
Storage Stability
Storage Temperature
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