a1 ESTP, 28 avenue du Président Wilson, 94234 Cachan, France
a2 INRA, rue de la géraudière, 44300 Nantes, France
Physical properties of pure bitumen 35/50 and polymer-modified bitumen 13/40 are studied using needle penetration test and differential scanning calorimetry (DSC). In particular, the mechanical response under indentation conditions is achieved as a function of different loads and temperatures. Our results show that lower temperature susceptibility is associated to larger loads but its change is rather small for the tested bitumens. A pure bitumen 35/50 exhibits a single glass transition temperature for different heating rate whereas modified bitumen 13/40 presents two Tg for different heating rate.
(Received October 21 2011)
(Revised February 01 2012)
(Accepted June 07 2012)
(Online publication July 11 2012)