Title: Fatigue Behaviour of Waste Shredded Rubber Modified Asphalt Concrete
Abstract: Pavement failure can be manifested by excessive cracking due to fatigue. Highway pavements are subjected to a repeated passage of wheel loading of varying magnitude and intensity. Fatigue has been defined as the phenomenon of fracture under repeated or fluctuating stress having a maximum value generally less than the tensile strength of the material. The fatigue resistance of bituminous mixtures is generally defined as the ability of the mixture to respond to repeated traffic loads without significant cracking. Fatigue failure is often taken as an arbitrary point at which the pavement can no longer perform satisfactorily as a load carrying under repeated load. It is therefore critical that the condition at failure be clearly defined for the particular test effort selected in a laboratory investigation. On the other hand, fatigue failure in the field is evidenced by cracking. Many advantages of incorporating rubber into the pavement layers of a structure have been reported. However, structured studies which deal with the long-term performance and durability of asphalt concrete made with rubber-modified bitumen are not available. This laboratory study examined the effect of shredded vulcanized tire rubber bitumen blends on the fatigue behavior of asphalt concrete made with crushed limestone. The gradation of aggregates was selected on the basis of minimum porosity. An ordinary Portland cement was used as filler.
Publication Year: 2005
Publication Date: 2005-01-01
Language: en
Type: article
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