AutoCAD 2010 :: Cutting Solid Into Two With Non-planar Cutting Plane

Is there a way to cut a solid into two pieces using a non-planar cutting plane?  I have been tasked with calculating the volume of concrete damage in a chute block.  I have a sketch of the damage on the chute block.  I created the chute block as a solid and then drew the damaged area extents using plines.  This created non-planar plines.  Is there a way to get this to work that will allow me to see the volume of the concrete damage?  I need an easy way to do this, there are 50 chute blocks all the same size but with varying degrees of damage