5PrEN12697-26,Bituminous mixtures test methods for hot mix asphalt-Part 26:Stiffness.
6ASTM D4123-1982:Standard Test Method for Indirect Tension Test for Resilient of Bituminous Mixtures.
7AASHTO Designation:TP31-961,2 Standard Test Method for Determining the Resilient Modulus of Bituminous Mixtures by Indirect Tension.
8P.DES CROIX,L.PLANQUE.Experience with Optimized Hard Bitumen in High Modulus Asphalt Mixes[R].3rd Eurasphalt & Eurobitume Congress,2004.
9Didier Desmoulin.Comparative Experiment for PMB and Hard Bitumen on a Thin Anti rutting Maintence Treatment,3rd Eurasphalt & Eurobitume Congress,2004.