Delineator Post Mounting
A delineator post can be mounted or can have a base. Typically they are purchased with a base, but you can buy epoxy which is a sticky glue like substance on a pad that you stick between the bottom of the delineator and pavement or concrete.
A delineator post is most likely going to be mounted to pavement or concrete if the project is more permanent. A base allows the delineators to be moved around and placed wherever whenever. It allows for a lot more versatility.