J
JCB
Guest
What I am hoping for is maybe something in the range of 50% result for 10% cost.
You're not gonna like this post either, but the numbers you're hoping for are actually about reversed. You'll be more likely to get 10% result for 50% of the cost.
If we could build roads for 20% of the cost and get the same life...we'd be doing it. Standard practices here really are the most efficient.
You're on the right track with drainage. Unless you've got big trucks on your driveway, you don't need strength - you need to keep it dry. Passenger cars mean nothing. Passenger cars can drive on your lawn if it's dry and it'll hold up. If you can keep your driveway dry (i.e. drainage) you won't have to worry about frost heaves or ruts either.
You might get some satisfactory results mixing in some portland cement or other additive to the surface, but there is a reason it's not widely done. It can work well one time, but may not be satisfactory the next. Whatever you do, just be sure to run the numbers and make sure your not starting down the path to a 50/10 proposition.