Compacting gravel driveway

   / Compacting gravel driveway #41  
What I think causes a lot of problems with these things, step 1; define the scope/goal/budget, and then work from there.

What I mean is, function vs pretty; the $2000 fix or the $20,000 fix, are we wanting are low clearance corvettee to stay clean and not rub, or are we driving a suv/truck. I really think your material will be 100% fine, exactly the way you planned it, and I think adding additional fines is an unneeded expense, and could possibly make the material worse, dustier, and more prone to washing. It would, however, probably improve ride quality and appearance.
Not true in my experience. I’ve done a long 2000’ driveway with just gravel. It was compacted but always moved. I had to regrade it frequently. Then I added the crushed rock fines and compacted that. Now the road is locked together as a solid surface and doesn’t move. Now I buy a product we call road base. It has the various sized gravel already mixed with the rock fines. It makes a big difference and really reduces maintenance.
 
   / Compacting gravel driveway #42  
Not true in my experience. I’ve done a long 2000’ driveway with just gravel. It was compacted but always moved. I had to regrade it frequently. Then I added the crushed rock fines and compacted that. Now the road is locked together as a solid surface and doesn’t move. Now I buy a product we call road base. It has the various sized gravel already mixed with the rock fines. It makes a big difference and really reduces maintenance.

You are absolutely correct for Gravel. Our OP is buying crushed rock/road base/crusher run, whatever your local name is; but that has fines included in the material. Now, without looking at it/feeling it, I can't say if it has enough fines or not.
 
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   / Compacting gravel driveway #43  
You are absolutely correct for Gravel. Our OP is buying crushed rock/road base/crusher run, whatever your local name is; but that has fines included in the material.
Oh, so he’s buying the product that we call road base? That’s all that’s necessary. It will compact very well.
 
   / Compacting gravel driveway #45  
What some call 'road base', in northern Kentucky they call 'dense grade'. Small angular gravel with fines. I just put 5 loads on a 16 degree hill. Placed and smoothed with bucket and box blade. After a decent rain, then drying, that surface is hard like cement. I had to chip and dig on a small area to contour it and was stunned at how hard it set up.
IMG_20240708_171440.jpg
 
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   / Compacting gravel driveway #47  
My mile long gravel driveway had sand & silt as the very top layer. It was compacted by my daily driving on it. No need for expensive compactors. It's not going anywhere.

Over the years - 43 years - the top layer is now - gravel, sand, silt & volcanic ash. It's hard as concrete in the summer.
 
   / Compacting gravel driveway #48  
There are a Lot of options
A: dirt; cheap to free; can be fine for many people/conditions/soil types; sometimes a dirt or sand drive can seem fine, until a heavy vehicke breaks though; can always be improved later; on a slope, erosion can get Very bad fast; its entirely depended on your local soils/slopes/drainage; DIY friendly with tractor/skid steer; or nothing ar all

B: wood chips on dirt; cheap to free; works well many times But it will need removed if improved; can attract termites; can float in heavy water; can wash; Need to have a free source, like a power ROW clearing contractor; not easy to grade;

C: improv stabalized; carpet/conveyer belts/ect; can actually work very well; look ghetto as heck, really need to be removed if you make improvements

D: sand-clay/ball field clay; cheap (if locally available); doesn't wash too bad; can be added to with more clay/rock/ect; can actually be paved over; gets slimy in rain; stains vehicles/clothes/tracks into house; if you get it delivered, you can easily spread/grade with tractor/skid steer/mini hoe

E: gravel/roadbase; can get pricey with trucking, but if close locally, it's pretty cheap; properly installed will last a long time, can be added too/redressed/regraded/paved over; some roadbase (limerock) will wash pretty bad; washed graded gravel doesn't really bond into a homogenous base; even if you add a few loads of rock every 5 years, it's still probably far cheaper than asphalt or concrete; if delivered can easily be spread/shaped with tractor/skid steer/whatever

F: crushed concrete; very good material; can be priced near roadbase depending on trucking; very dusty; water doesn't hurt it, unless it's high volume/high velocity; can be added too/paved over; often has some wire, and can lead to flat tires; easily spread and shaped intialy; can be hard to regrade later

G: RAP/millings; getting very expensive, ($900/load locally, and that's off the roadway); pretty much only available near a milling job or an asphalt plant; water doesn't really affect it much; less dusty than crushed concrete; can be paved over; don't believe it's a magical material; it doesn't turn back to asphalt in the summer

H: chip seal over one of the base materials; cheaper than asphalt; protects the base from water; eliminates dust; pretty good traction; it's very thin, and won't last as long as asphalt; don't see. to be many contractors still doing it; requires a tack truck or atlwast a tack wagon, and a rock spreader, and traffic roller; Not DIY friendly; can be paved over in the future; can be re chip sealed.

I: asphalt; cheaper than concrete /pavers; dust free, not affect by rain/minor run off water; you do need to patch and crack seal as needed; can be milled or overlayed; fairly easy to cut or demo if needed; not DIY friendly, however, you really can Pave a small area with a dump trailer, box blade, and a plate tamp; in 90% of cases asphalt will be laid on top of another base material; but full depth asphalt, using asphalt as a base is also done in areas where time or water are critical issues; that gets extremely expensive when you start talking about 6-9" of asphalt.

J: concrete; if done correctly, with good subgrade it should outlast you, but is very expensive; poorly done concrete costs just as much, but will be a mess as quick as anything else; unaffected by petroleum/most chemicals; unaffected by water; cutting/demo very expensive; can Not be overlayed; can be very good looking; needs cure time after pour. Pretty DIY friendly, and can be done in sections/phases; many contractors; concrete plants deliver on ready mix trucks; can be pumped in some pretty bad terrian; can be groved to improve traction on slopes;

Few odd ball options;
Soil cement; has to be the right native soils (sandy, low organics); can be paved over; water doesn't break this base down; if soils are right, you are only importing the Portland cement to mix in; can't really be regraded after it cures; can reflect cracks though asphalt
Geostabalized grids; pretty costly, has to be paired with an aggregate base; can help bridge bad subgrade, but eventually the subgrade will rear its ugly head; don't know if it needs removed or top coated with additional base to Pave over?
Pavers; probably the most expensive, and to do properly for long life, they need to be on a good base; often grow mold/slime; will settle individually; can often remove a few broken ones to repair or remove and replace to trench under the drive; can also be mortared in
 
   / Compacting gravel driveway #49  
Sorry, I know I'm quoting myself; but I'm not spending the brain power or the time typing all that again.
 
   / Compacting gravel driveway #50  
I'm getting crashed stone delivered and spread on my old gravel driveway. I will crown and level it. Then a guy with vibrating roller will come over and compact it. Would it be a good idea to have stone dust spread on top before compacting? Please share your experience/ideas/suggestions...
 

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