Asphalt in Hay Barn

Hey guys, I've heard that asphalt would be the better choice when used in a hay barn as opposed to gravel or concrete.

 

Does anyone here have asphalt in their barn?

 

I was quoted a "base asphalt #57 mixture" and a "surface pavement mix" -- both are way cheaper than concrete -- not entirely sure the difference or what would be the best option, though.

 

Thanks in advance!

Asphalt in Hay Barn