I have a small ramp built of asphalt about 5 feet wide and 4 feet in length
for my lawn tractor. Over the year, it has sunken about 3-4 inches similar
to the problem with asphalt driveway at the juction of the garage entrance.
I would like to rebuild it up with asphalt such as Bomix. My question is -
do I need to put some type of adhesive on the old surface before laying the
new asphalt, or is Bomix potholes repair asphalt the material to use?
Would concrete mix on top of the old ram a better idea to repair this ?

Thank you for all your advice.