Civil Engineering Beyond Limits

Yazarlar: Michael Tiza

Konular:-

DOI:10.36937/cebel.2021.002.004

Anahtar Kelimeler:Characterızatıon,Eclaımed Asphalt Pavement(RAP),Ptımızatıon,Polymer Modıfıed Asphalt

Özet: This study reviews relevant literature on the characterization of reclaimed asphalt pavement(RAP) and its interaction with polymer modified asphalt(PMA). The study on fatigue cracking indicates that several indexes of binder performance showed that the use of recovered RAP binder usually decreased Polymer Modified Asphalt(PMA) binder tolerance to cracking. RAP binding rigidity has affected fatigue tolerance of the PMA binder. The greater the rigidity of the RAP binder, the more fatigue strength the binders would provide. In addition, several researchers demonstrated that the RAP binder the elastomeric response quality. It was generally found that the RAP binder effect on the PMA binder is similar to the unmodified binder effect. The resistance to rutting in the PMA binder had improved and fatigue cracking and thermal cracking minimized. Moreover, several researchers found that the inclusion of a RAP lowers elastomeric efficiency. In all, RAP binding stiffness and RAP gradation are essential features for proper RAP-containing PMA-mix designs. During RAP binder characterization, the mortar testing process without the use of binder extraction proved to be more effective than the conventional method as per review. Also, the best measure for the evaluation of the fatigue cracking efficiency of RAP containing PMA blends does not seem to have any consensus among researchers as several researchers seem to have varying experimental facts. The literature on Life Cycle Analysis was also reviewed.

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