Question

Could you please verify the reference value used for field compaction, “laboratory maximum density” is the bulk density obtained from CTM 304? Just not to be confused with the theoretical maximum density from CTM 209.

Answer

A minimum relative compaction is 95%, without looking at the required maximum/minimum as specified in the project documents using CTM. CTM 304 is the method to be used in the sampling of AC. References to CTM 304 are found in Caltrans IA of said CTM 304 outline.