best stone crush for asphalt,Crushed Stone and Gravel Driveways: Choosing the Right MaterialJun 29, 2017 . Base – The base layer of the driveway is made up of slightly smaller crushed stone than the sub-base layer. Sometimes stone dust or fines will be intermixed with the aggregate to reduce voids and better hold this layer in place. Surfacing Material – The surface layer of gravel is poured on top of the base.best stone crush for asphalt,Crusher Run: The Best Uses - Braen StoneJun 29, 2017 . Despite the fact that there are many ways in which crusher run can be used, one of its main functions is as a base or sub-base filler. Contractors and homeowners may choose to use the material as a base layer beneath concrete and asphalt, or as the sub-base for road systems and driveways. The material.