Addressing the healing compensation on fatigue damage of asphalt binder using TSH and LASH tests.

• The damage healing and local life compensation are interactively analyzed. • The energy evolution is well correlated to the damage healing recovery. • A new energy-based parameter (Q H) is proposed for binder healing characterization. This paper investigated the damage healing, local life compensation and intrinsic healing characteristics of asphalt binder. The damage healing (Δ S) is independent of damage level and the percent local life compensation (%Δ N) increases with a higher strain amplitude in TSH test. The integrated Δ S -Δ N analysis is recommended for the healing compensation characterization. The totally stored pseudo strain energy (PSE) to counteract healing recovery is linearly linked to the Δ S regardless of the loading modes, strain amplitudes and rest periods. A new parameter of average stored PSE (Q H) is proposed to reveal the intrinsic healing potential and characteristics. [ABSTRACT FROM AUTHOR]