Visco-Elasticity of Asphalt Mixture under Broad Temperature and Frequency

Abstract:

In this study, the improved model of CAM with clear parameter was introduced. The visco-elasticity of asphalt mixture under broad temperature and frequency was studied and the properties of asphalt mixture at high asphalt and low temperature of was described by fitting the parameters of CAM model. The four equations of CAM model can be utilized in analysis of visco-elasticity of asphalt mixture and the physical meaning of the parameters in equations was very clear; Through nonlinear curve fitting , the CAM model was found to overcome the defect of deviation from the start and the end fitting; For one kind of asphalt mixture, the complex shear modulus and storage shear modulus was higher in same frequency at lower temperature, and the elasticity was in dominant position significantly; At middle temperature, the modulus of asphalt mixture became smaller; At high temperature, although the modulus was lower, the elasticity was higher. At middle-high temperature, the modulus of asphalt mixture remained smaller and the ratio of elasticity was minimum value, and asphalt mixture was recognized as typical visco-elastic body and was destroyed easily by the deformation disease.

• Periodical: Advanced Materials Research (Volumes 838-841)
• Pages: 156-161
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.838-841.156
• Online since: November 2013
• Authors: Peng Yang*, Hong Zhi Cui, Wei Lun Wang
• Keywords: Asphalt Mixture (AC), Broad Temperature and Frequency, CAM Model, Visco-Elasticity

References

[1] M. Marasteanu, D. Anderson. Time-Temperature Dependency of Asphalt Binders-An Improved Model [J]. Asphalt Paving Technology, Journal of the Association of Asphalt Paving Technologists. 1996, 65: 408-448.

[2] J. Stastna, L. Zanzotto, and J. Berti. How Good are Some Rheological Models of Dynamic Functions of Asphalt [J]. Journal of the Association of Asphalt Paving Technologists. 1997, 66: 458-485.

[3] Menglan Zeng, Hussain U. Bahia, Huachun Zhai. Rheological Modeling of Modified Asphalt Binders and Mixtures[R]. Annual Meeting of the Association of Asphalt Paving Technologists. 2001: 8~35.

[4] D.W. Christensen Jr., D.A. Anderson. Interpretation of Dynamic Mechanical Test Data for Paving Grade Asphalt Cements[J]. Journal of the Association of Asphalt Paving Technologists. 1992, 61: 67-116.

[5] M.O. Marasteanu, and D.A. Anderson. Improved Model for Bitumen Rheological Characterization[R]. Eurobitume Workshop on Performance Related Properties for136 Bituminous Binders, Luxembourg, 1999: 133-134.

[6] You, Z., Adhikari, S., Masad, E., and Dai, Q. , Micro-structural and micromechanical properties if field and lab-compacted asphalt mixtures[J], Journal of Association of Asphalt Paving Technologists (AAPT), 2009, 78.

[7] You, Z., Adhikari, S., and Dai, Q. Air Void Effect on an Idealized Asphalt Mixture Using a Two-Dimensional and Three-Dimensional Discrete Element Modeling Approach [J]. International Journal of Pavement Engineering, Taylor & Francis. (2008).

DOI: 10.1080/10298436.2010.488737