Presentation on theme: "Performance of Exposed Aggregate Surface of Composite Pavements at MnROAD Bernard Izevbekhai Alexandra Akkari Minnesota Department of Transportation International."— Presentation transcript:
Performance of Exposed Aggregate Surface of Composite Pavements at MnROAD Bernard Izevbekhai Alexandra Akkari Minnesota Department of Transportation International Symposium on Pavement Performance Trends Advances and Challenges ASTM Committee E17 on Vehicle Pavement Systems Tampa Florida December 5 2011
Conclusions EAC does not provide significant noise reduction higher OBSI than both the HMA and traditional diamond grind. Innovative diamond grinding of composite pavements may be beneficial for noise reduction lower OBSI than the HMA, EAC, traditional DG surfaces, and higher sound absorption than EAC. EAC can provide more than adequate friction for driver safety, but does not show any improvement from typical HMA or DG. Anomalous laser-induced IRI was not observed in EAC. Going Forward Changing the quality and type of aggregate in EAC could lead to a change in texture orientation / spikiness and improve surface performance. Need to examine Elongation, flatness etc in mix design to minimize spikiness.