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Advice Needed - Gravel Driveway Construction
Glad everything worked out well.
Do yourself a favour though, before it gets too beaten up start pouring on the CaCl heavy, it will really help to lock it down and make it solid.
You may also want to look into tar & chip for the surface once it is well packed and stable. For a private roadway of that size it is not expensive and will keep the surface in very good condition for a long time.
Best of luck.
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Advice Needed - Gravel Driveway Construction
Sorry for the delay replying.
CaCl is the chemical symbol for Calcium Chloride.
It is commonly used for things like accelerating concrete curing times, as well as an ice melter.
It is the most common, because it's the cheapest, chemical they apply, either as a liquid or as pellets, to dirt roads to keep the dust down and bind the surface.
The biggest mistake I see people make when doing new road construction is using the wrong material in the wrong spot. The material commonly called 'pit run' or 'bank run' which is a mixture of sand and gravel, usually rounded stones, is a great thing to use as a base, to build up the ground to make drainage. The problem is it doesn't stand up well to vehicle travel, it keeps moving, tires can chew it up badly, even just rolling straight over it. For the top layers you want something with a fairly small particle size and sharp, irregular corners that will lock together and really bind up. This is what makes the difference between a hard, long-lasting surface and the bumpy rutted surface that needs constant maintenance.
Unless you've got REALLY good drainage try to avoid anything with clay or silt in it, it tends to absorb and retain water. In an area subject to freeze & thaw cycles this can lead to a spongey mess caused by the frost heaving.
Best of luck.
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Advice Needed - Gravel Driveway Construction
Generally speaking the better your start, the better your finish will be.
You will be able to get any competent dump truck driver to do a lot of the 'spreading' for you. The chains at the back of the box are to stop the tailgate from opening beyond a certain point. Any driver with much experience will be able to lay down a layer of material the width of the box at any desired depth AMAZINGLY well. They know how fast to drive with what opening to obtain a 2" layer, every time.
If the drivers are as good as my drivers are they can even overlap two passes, one per side, down the centerline for you and create the crown at the same time as they spread the material for the roadway.
Between the weight of the trucks and the equipment doing the work you will obtain pretty decent compaction from just the work being done itself.
Best of luck.
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