Flexural fatigue evaluation of cement-treated mixtures of reclaimed asphalt pavement and crushed aggregates

摘要

This paper evaluates the fatigue behavior of cement-treated recycled pavement materials. Six mixtures with different cement contents and reclaimed asphalt pavement (RAP) percentages were tested under static and cyclic flexural loading. Cement content was the main factor affecting strength, whereas RAP percentage showed major effect in strain at break, Similar moduli were obtained under both loading conditions, which is useful for design by allowing estimating resilient modulus through static results. Tests results and mechanistic analysis showed that the fatigue life of cement-treated recycled bases depends on the mixture composition and on the thicknesses of asphalt wearing courses and recycled layers. (C) 2017 Elsevier Ltd. All rights reserved.