A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Thermo-piezo-rheological characterization of asphalt concrete
Highlights Stress-dependent linear viscoelastic property of asphalt concrete is investigated. Thermo-piezorheological simplicity of asphalt concrete is validated using the TTPSP. The fundamental Triaxiality Ratio parameter is used for LVE characterization. New model proposed that integrates the triaxiality ratio with the TTPSP.
Abstract The linear viscoelastic (LVE) properties of asphalt concrete is investigated in this paper using a controlled-strain triaxial dynamic modulus test over wide frequency, temperature, and confining pressure ranges. The time–temperature-pressure superposition principle (TTPSP) is applied to validate the thermo-piezo-rheological simplicity of the tested materials using triaxial master curves. The LVE response is found highly stress-dependent at intermediate and high temperatures. The Prony series modeling of time-domain properties ascertains that confining pressure strongly correlates with long-term relaxation modulus, the absolute maximum slope of the relaxation modulus, and viscoelastic damage parameter. The stress triaxiality ratio concept is applied, and a new shift model is proposed that takes the triaxiality ratio as an internal state variable in the TTPSP. The model prediction agrees well with the experimental data. Moreover, a relationship between the long-term relaxation modulus and the triaxiality ratio is established. The triaxiality ratio coupled with TTPSP can accurately describe the stress-dependent response of asphalt concrete in the LVE domain.
Thermo-piezo-rheological characterization of asphalt concrete
Highlights Stress-dependent linear viscoelastic property of asphalt concrete is investigated. Thermo-piezorheological simplicity of asphalt concrete is validated using the TTPSP. The fundamental Triaxiality Ratio parameter is used for LVE characterization. New model proposed that integrates the triaxiality ratio with the TTPSP.
Abstract The linear viscoelastic (LVE) properties of asphalt concrete is investigated in this paper using a controlled-strain triaxial dynamic modulus test over wide frequency, temperature, and confining pressure ranges. The time–temperature-pressure superposition principle (TTPSP) is applied to validate the thermo-piezo-rheological simplicity of the tested materials using triaxial master curves. The LVE response is found highly stress-dependent at intermediate and high temperatures. The Prony series modeling of time-domain properties ascertains that confining pressure strongly correlates with long-term relaxation modulus, the absolute maximum slope of the relaxation modulus, and viscoelastic damage parameter. The stress triaxiality ratio concept is applied, and a new shift model is proposed that takes the triaxiality ratio as an internal state variable in the TTPSP. The model prediction agrees well with the experimental data. Moreover, a relationship between the long-term relaxation modulus and the triaxiality ratio is established. The triaxiality ratio coupled with TTPSP can accurately describe the stress-dependent response of asphalt concrete in the LVE domain.
Thermo-piezo-rheological characterization of asphalt concrete
Mulugeta Alamnie, Mequanent (author) / Taddesse, Ephrem (author) / Hoff, Inge (author)
2022-03-08
Article (Journal)
Electronic Resource
English
Rheological characterization of asphalt concrete using a shear box
| Tema Archive | 2013
Rheological Characterization of Asphalt Concrete Using a Shear Box
| British Library Online Contents | 2013