Author(s)

María Ángeles Vargas-Hernández^1*, Miguel Ángel Vargas², Pedro R. García-Morán³, Humberto Vázquez-Torres^4*

¹División de Ingeniería Química y Bioquímica, TecNM—Tecnológico de Estudios Superiores de Ecatepec, Edo. de México, México.
²Facultad de Química, Universidad Nacional Autonóma de México, Cd. de México, México.
³Facultad de Ciencias Básicas Ingeniería y Tecnología, Universidad Autónoma de Tlaxcala, Tlaxcala, México.
⁴Departamento de Física, Universidad Autónoma Metropolitana-Iztapalapa, Cd. de México, México.

The dynamic viscoelastic properties of asphalt AC-20 and its composites with Organic-Montmorillonite clay (OMMt) and SBS were modeled using the empirical Havriliak-Negami (HN) model, based on linear viscoelastic theory (LVE). The HN parameters, α, β, $G_0$ , $G_{\infty }$ and τ_HN were determined by solving the HN equation across various temperatures and frequencies. The HN model successfully predicted the rheological behavior of the asphalt and its blends within the temperature range of 25˚C - 40˚C. However, deviations occurred between 40˚C - 75˚C, where the glass transition temperature T_g of the asphalt components and the SBS polymer are located, rendering the HN model ineffective for predicting the dynamic viscoelastic properties of composites containing OMMt under these conditions. Yet, the prediction error of the HN model dropped to 2.28% - 2.81% for asphalt and its mixtures at 100˚C, a temperature exceeding the T_g values of both polymer and asphalt, where the mixtures exhibited a liquid-like behavior. The exponent α and the relaxation time increased with temperature across all systems. Incorporating OMMt clay into the asphalt blends significantly enhanced the relaxation dynamics of the resulting composites.

Asphalt, Blends, Master Curve, Linear Viscoelasticity, Havriliak-Negami Model

Vargas-Hernández, M. , Vargas, M. , García-Morán, P. and Vázquez-Torres, H. (2024) The Effectiveness of the Havriliak-Negami Model in Predicting the Master Curves of the Asphalt Blends with SBS Triblock Copolymer and Organic-Montmorillonite at Different Temperatures and Frequencies. Journal of Materials Science and Chemical Engineering, 12, 23-39. doi: 10.4236/msce.2024.127003.