Title

Temperature Dependency of Dynamic Mechanical Properties of Cement Asphalt Paste by DMTA Method

Abstract

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.

Department(s)

Civil, Architectural and Environmental Engineering

Comments

Funded by the National Natural Science Foundation of China (50878209 and 51208515) and the National Basic Research Program of China ("973" Program) ( 2013CB036201)

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)

1000-2413

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2017 Wuhan University of Technology, All rights reserved.

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