MEASURING THE RHEOLOGICAL PROPERTIES OF BITUMINOUS BINDERS FINAL RESULTS FROM THE ROUND ROBIN TEST OF THE BNPÉ/P04/GE1 WORKING GROUP (FRANCE)

In a previous paper presented at the 2008 E&E Congress, the French mirror group (BNPé/P04/GE1) of the CEN/TC336 – WG1 committee (bituminous binder) has reported the results of a round robin test on DSR complex modulus measurements involving two paving grade bitumen (10/20 and 50/70 classes) and three modified binders (plastomer, elastomer and cross-linked elastomer). This paper presents the outcome of the follow-up studies which had been decided at the time. In a first step, a number of dedicated investigations have been made to identify the potential contribution of different factors to the variation in measurement results. In particular, the impact of waiting time after