Fatigue of Cold Recycled Cement-Treated Pavement Layers: Experimental and Modeling Study

Fatigue is the main design criterion for cold recycled cement-treated mixtures (CRCTMs). However, literature shows that fatigue behavior of such still not well known. For example, effect increasing reclaimed asphalt pavement (RAP) contents yet a topic discussion. This experimental and modeling study helps fill knowledge gaps on CRCTM using long-term curing tests three methods currently being used in different countries. The objectives this were: (1) to characterize mechanical RAP, aggregates cement; (2) evaluate life pavements with base subbase layers novel Brazilian method (MeDiNa); (3) compare results those obtained South African Pavement Engineering Manual (SAPEM) transfer functions American Association State Highway Transportation Officials AASHTOWare Mechanistic-Empirical Design (PMED) software. were tested laboratory flexural static cyclic tests, required parameters use obtained. Experimental demonstrated superior higher RAP contents. On other side, lower abruptly lost stiffness short periods, making thicker structures necessary. Therefore, high only sustainable practice, but also technical benefit. equivalent single axle loads SAPEM than MeDiNa, while PMED ones both previous methods. Despite inherent differences, suggests MeDiNa more conservative. It highlights importance calibration based performance data.