John, Ryan, and Joe are back again. This time to discuss the most recent Viscosity Graded Asphalt Cement and Performance Graded Asphalt Binder proficiency sample rounds and results. We also dive into why the samples are shipped twice a year and what happens to all of the optional data that is collected. 

Related information: 

• S4 E03: May PSP Insights
• S3 E30: November PSP Insights
• S3 E23: September PSP Insights
• S3 E15: July PSP Insights
• S3 E06: Digging into Soil Classification and Compaction Samples 185/186
• S2 E29: The Proficiency Sample Program Participation Guide and Prerequisites for Accreditation
• S2 E22: Taken from TechEx: Hydrometer Analysis of Fine-Grained Soils
• S1 E30: Inside PSP with Guest Host, Oak Metcalfe
• S1 E24: The transition from ASTM D422 to D6913 and D7928
• S1 E15: FAQ - How and when do I respond to low ratings? 
• S1 E02: Dealing with Repeat Low Ratings

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Related information on this and other episodes can be found at aashtoresource.org.