This is out in left field but justa thought.......
I have just put in a driveway to my farm and I need something to tie all the rock together. The driveway has been constructed using bigger rock with a dense grade on top of that. For the most part the driveay is fine and is packed down well. There are certain places that are getting the washboard effect, mainly in the curves and on the inclines. I have thought about lime and all that but had an idea the other day and was wodering if it would be worth trying.
Saw Dust.
Would it fill in the voids between the rock? If so it isnt as powdery as lime and may control the "gravel dust" associated with gravel driveways. I have used it in my gravel floor barns and it packs in the rocks over time and thought since alot of places basically give the stuff away it might just work......
Be interested in everybodys thoughts on this subject.

Awaiting replies.....