Key piece if information is missing here.....how thick did you spread it?
If more than 3-4" thick, then you arent getting it properly compacted, and the only thing that will correct that is either time or lots of rain.
How long is this driveway.
General rule of thumb is 20 tons will do 100' of driveway, 10' wide, 4" thick. So did you do 1000' of driveway with 200t?
I would NOT add any fines of any kind to it. No sand, no limestone dust, no nothing. At least not until you determine the problem, or you could make things worse. You got 3/4 minus and 1/2 minus. You should already have LOTS of fines. So either post pics of a sample here, or take to the supplier like mentioned and ask.
Around here, we have 304's (1-1/2 minus) and 411's (3/4 minus). A 4" thick layer, you can pack and pack and pack with tires, roller, whatever. But still remains loose and "workable". Even a light duty rear blade would still cut in afterword. But after the first rain and it drys out....its like concrete. And even a heavy blade will just chatter across the surface.
another mistake people make with this type of stone, is trying to overwork it with a blade or landscape rake. All you do is let the fines settle to the bottom, and keep dragging the large stones to the top. More of an issue with the 304's (1-1/2 minus).
Also, you mentioned not liking the dust getting tracked into the barn. The nature of this type of stone (whatever-minus) HAS lots of dust particles. Makes an excellent base. But still has the dust. If you want to rid the dust, you will need to go back over with a ~1" thick top coat of a washed uniform size stone. Around here, we call them #8's (3/8-1/2" pea sized stuff), or 57's (~3/4-1" large marble sized stuff).
So.......
1. How thick did you spread it?
2. Has it been rained on pretty good?
3. Does it look like it has plenty of fines/dusty partials?
