چکیده مقاله
The addition of crumb rubber to bitumen for modifying certain properties and managing waste tires is a commonly adopted method worldwide Typically, incorporating crumb rubber enhances bitumen's resistance to thermal cracking at low temperatures Therefore, predicting the viscoelastic behavior of crumb rubber modified bitumen is of significant importance Given that the mixing process of crumb rubber with bitumen is physical in nature, it cannot be asserted that the resulting material is homogeneous Consequently, in this study, a two phase micromechanical model has been considered as a realistic approach for simulating the viscoelastic low temperature behavior of crumb rubber modified bitumen To evaluate the low temperature viscoelastic characteristics of both pure bitumen and crumb rubber modified bitumen, the Bending Beam Rheometer BBR test was conducted at temperatures of 6°C, 12°C, 18°C, and 24°C The primary outputs of this test include flexural creep stiffness, S t and the creep rate, m value Subsequently, by inputting the characteristics of pure bitumen and crumb rubber into the applied micromechanical model, the viscoelastic properties of crumb rubber modified bitumen were calculated and compared with the experimental results The findings demonstrate the model's satisfactory performance with an acceptable level of accuracy in predicting the low temperature viscoelastic behavior of crumb rubber modified bitumen samples
کلیدواژهها
نویسندگان
Hadi Shahsavari
M Sc Student, Department of Civil & Environmental Engineering, Amirkabir University of Technology Tehran Polytechnic , Tehran, Iran
Mohammad Jafari
Assistant Professor, Department of Civil Engineering, Babol Noshirvani University of Technology, Babol, Iran
Pouria Hajikarimi
Assistant Professor, Department of Civil & Environmental Engineering, Amirkabir University of Technology Tehran Polytechnic , Tehran, Iran
Fereidoon Moghadas Nejad
Professor, Department of Civil & Environmental Engineering, Amirkabir University of Technology Tehran Polytechnic , Tehran, Iran
شیوه ارجاع
Shahsavari, Hadi and Jafari, Mohammad and Hajikarimi, Pouria and Moghadas Nejad, Fereidoon,1404,Micromechanical Modeling of Low-Temperature Viscoelastic Behavior of Crumb Rubber-Modified Bitumen,14th International Congress on Civil Engineering,Tehran
ارائهشده در
مجموعه مقالات چهاردهمین کنگره بین المللی مهندسی عمران29 مهر 1404 · تهران