This Technical Brief provides an overview of the binder parameter Delta Tc (ΔTc). Delta Tc is an indicator of the effect of aging and additives on the asphalt rheology. More specifically, ΔTc provides insight into the relaxation properties of an asphalt binder that can contribute to non-load related cracking or other age-related embrittlement distresses in an asphalt pavement. This Technical Brief provides information for responsible deployment of the ΔTc as a specification parameter should State DOTs be considering implementation.
The current Superpave asphalt binder specifications do not address durability issues and do not adequately address fatigue. Several approaches have be...
This report addresses a shortcoming of the Multiple Stress Creep Recovery (MSCR) test method and specification system for virgin PG 58-XX and blends o...
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