Thermo-hydro-mechanical behaviour of cold reclaimed asphalt aggregates without binder addition - Archive ouverte HAL
Article Dans Une Revue Road Materials and Pavement Design Année : 2019

Thermo-hydro-mechanical behaviour of cold reclaimed asphalt aggregates without binder addition

Résumé

This paper details a cold recycling evaluation of 100% reclaimed asphalt aggregates without any binder addition. In this context, a series of triaxial laboratory tests was performed. Monotonic triaxial tests were conducted to determine failure resistance at 20°C, 50°C and with a specimen preheated at 50°C then tested at 20°C. Repeated Load Triaxial (RLT) tests were performed to analyse the permanent and resilient strains at 20°C, at three frequencies and with two water contents. It is found that increasing temperature causes a drop of failure resistance while cohesion is increased. RLT tests reveal that higher water content implies higher strains, as well that water content presents a higher impact on resilient behaviour than low frequencies. Finally, the non-linear elastic Boyce model was used to describe the resilient strains. Total stress and effective stress calibrations were performed with a measurement of the initial suction. Eventually, these effective stress calibrations were performed with one set of parameters.

Dates et versions

hal-03065785 , version 1 (14-12-2020)

Identifiants

Citer

Laura Gaillard, Cyrille Chazallon, Pierre Hornych, Juan Carlos Quezada, Christiane Raab. Thermo-hydro-mechanical behaviour of cold reclaimed asphalt aggregates without binder addition. Road Materials and Pavement Design, 2019, 20 (sup1), pp.S49-S63. ⟨10.1080/14680629.2019.1587490⟩. ⟨hal-03065785⟩
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