000125865 001__ 125865
000125865 005__ 20190213070411.0
000125865 037__ $$aCONF
000125865 245__ $$aAssessment of the rheological properties of asphalt rubber binder and its residual phases
000125865 260__ $$c2006
000125865 269__ $$a2006
000125865 336__ $$aConference Papers
000125865 520__ $$aThe asphalt rubber blends design is an empirical procedure and is quite sensitive to the variability of the components properties. A better understanding of the physical phenomenon involved during the curing process is a prerequisite step to propose a rational design procedure. This paper describes results from a laboratory investigation of the interaction between crumb rubber and different composition bitumen. The physical blending of the two components is achieved according to the Wet Process method with different proportions and size distributions of the rubber powder. Rubber particles' swelling in bitumen is assessed thanks to a centrifuging process, allowing a satisfactory separation of the residual bitumen and the rubber particles phases. Rheological measurements are carried out on base components, as well as on the final composite, and its residual constituting phases. The rubber swelling ratio, ranging from 200 to 400%, demonstrates that the final rubber phase is mainly constituted with absorbed bitumen. This phase shows a higher temperature sensitive behaviour slightly different from the one exhibited by the base rubber. The thermal sensitivity is clearly illustrated by the rheological measurements. On the other hand, the residual bitumen shows a significant hardening which is more marked for base bitumen with low aromatic oils content. The proposed experimental protocol improves the knowledge on the interactions in the asphalt rubber blends and could be a basis for a rational design approach.
000125865 6531_ $$aRubber
000125865 6531_ $$aBitumen
000125865 6531_ $$aSwelling
000125865 6531_ $$aRheology
000125865 6531_ $$aCentrifugation
000125865 700__ $$aOuld-Henia, M.
000125865 700__ $$0241970$$aDumont, A.-G.$$g105012
000125865 7112_ $$aAsphalt Rubber Conference$$cPalm Springs, California, USA$$dOctober 25-27, 2006
000125865 8564_ $$zURL
000125865 8564_ $$s342016$$uhttps://infoscience.epfl.ch/record/125865/files/Paper%20OuldHenia%20AR2006.doc$$zn/a
000125865 909C0 $$0252146$$pLAVOC$$xU10259
000125865 909CO $$ooai:infoscience.tind.io:125865$$pconf$$pENAC
000125865 937__ $$aLAVOC-CONF-2008-048
000125865 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000125865 980__ $$aCONF