Mortar fatigue model for meso-mechanistic mixture design of ravelling resistant porous asphalt concrete

Matériaux et constructions - Tập 47 - Trang 947-961 - 2013
Liantong Mo1, M. Huurman2, Shaopeng Wu1, A. A. A. Molenaar3
1State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, China
2Department of Technology and Development, Utrecht, The Netherlands
3Department of Road and Railway Engineering, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands

Tóm tắt

This paper presents the development of a practical mortar fatigue model on the basis of the dissipated energy concept. A specially designed test setup was developed for characterization of mortar fatigue at meso-scale by means of dynamic shear rheometer. Test results showed that mortar fatigue models based on the dissipated energy concept can be developed for the purpose of life predictions under complicated loading conditions. The dissipated energy per cycle in the initial phase of fatigue tests is a practical indicator for fatigue life determination purposes than the total energy dissipated during a fatigue test. Since a mortar fatigue model based on the initial dissipated energy per cycle was adopted, effects of random stress and strain signals on mortar fatigue can be taken into account.

Tài liệu tham khảo

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