Evaluation of the fatigue macro-cracking behavior of crumb rubber modified bituminous mixes

摘要

The use of crumb rubber modified bitumen (CRMB) in asphalt mixes is a road engineering technology\udthat has become increasingly important in recent years. Given the many economic and environmental\udbenefits of this type of binder, the goal is to give CRMB the same level of performance as conventional polymermodified\udbitumen. The appearance and propagation of cracks due to fatigue phenomena is one of the most\udcommon distresses affecting road pavements. Since crumb rubber enhances the mechanical properties of asphalt\udmixes, it can provide a viable solution for fatigue cracking. This paper presents the results of a comparative\udanalysis of the fatigue-cracking behavior of asphalt mixtures manufactured with crumb rubber modified bitumen\udand polymer-modified bitumen.