Temperature Dependency of Dynamic Mechanical Properties of Cement Asphalt Paste by DMTA Method
We investigated the temperature dependency of the dynamic mechanical properties of cement asphalt paste by the dynamic mechanical thermal analysis (DMTA) method. The experimental results show that the dynamic mechanical properties of cement asphalt pastes are sensitive to temperature due to the inclusion of asphalt, and may go through different states within a temperature range of -40 °C to 60 °C, which is different from that of pure cement and asphalt. As the temperature of the cement asphalt paste increases, a considerable change of dynamic mechanical properties, including storage modulus (E'), loss modulus (E") and loss factor (tanδ) is observed. Moreover, the influence of asphalt to cement (A/C) ratio on the temperature sensitivity of the dynamic mechanical properties of cement asphalt composites was investigated. The temperature dependency of cement asphalt composites is ascribed to the temperature dependency of the asphalt and its interaction with cement paste. A simple fractional model is proposed to describe the viscoelastic behavior of cement asphalt composites.
L. Fang et al., "Temperature Dependency of Dynamic Mechanical Properties of Cement Asphalt Paste by DMTA Method," Journal Wuhan University of Technology, Materials Science Edition, vol. 32, no. 6, pp. 1379-1387, Wuhan University of Technology, Dec 2017.
The definitive version is available at https://doi.org/10.1007/s11595-017-1756-x
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Asphalt; Cements; Dynamics; Mechanical properties; Thermoanalysis; Viscoelasticity; D. dynamic mechanical thermal analyses (DMTA); Dynamic mechanical property; Dynamic mechanical thermal analysis; Temperature dependencies; Temperature range; Temperature sensitivity; Visco-elastic behaviors; Viscoelastic modeling; Dynamic mechanical analysis; Cement asphalt paste; Viscoelastic model
International Standard Serial Number (ISSN)
Article - Journal
© 2017 Wuhan University of Technology, All rights reserved.
01 Dec 2017