At temperatures close to the binder's upper grade limit, aggregate structures played a critical role in the rut resistance of HMA mixtures whereas, at temperatures below the binder's upper grade limit, the stiffness of the asphalt binder played a more important role in the rut resistance of asphalt mixtures evaluated in this study. The US Army Corps of Engineers' gyratory testing machine (GTM), creep and the asphalt pavement analyser (APA) tests were selected to characterise the rut resistance of asphalt mixtures.The results from this study indicated that coarse aggregate AIMS, VCA and tri-axial tests were related to the CAA and laboratory-measured rutting indices. The aggregate imaging system (AIMS), uncompacted voids in coarse aggregate (VCA) and tri-axial shear tests were conducted to evaluate the coarse aggregate angularity (CAA). Three different asphalt binders (PG 64-22, PG 76-22 and PG 82-22) were used to make mixtures for laboratory rut evaluations.
Coarse gravels at five different angularity levels (100, 85, 70, 50 and 35% of aggregate with two or more fractured surfaces) were used to produce mixtures with similar aggregate gradations. In the present study, efforts have been made to identify the contributions of aggregate structure and asphalt binder to the rutting characteristics of a dense-graded surface HMA mixture. Rutting in hot-mix asphalt (HMA) mixtures can be attributed to either the lack of interlocking of aggregate structure or insufficient bonding between aggregate and asphalt binder, or both. +++ -2722,6 +2722,7 public int getLauncherLargeIconSize() method public int getMemor圜lass() method public void getMemoryInfo() + method public static void getMyMemoryState() method public android.os.Debug.MemoryInfo getProcessMemoryInfo(int) method public getProcessesInErrorState() method public getRecentTasks(int, int) throws -2804,6 +2805,7 public int importanceReasonCode field public importanceReasonComponent field public int importanceReasonPid + field public int lastTrimLevel field public int lru field public int pid field public pkgList -4759,6 +4761,7 class ClipData implements android.os.Rutting has been identified as one of the primary distresses in asphalt pavements. Merge "Fix softap start" diff -git a/api/current.txt b/api/current.txt
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