If you use concrete it's still the dirt around the concrete that supports the fence; you have just added 30 pounds of concrete to the bottom of it. If your soil has good percolation and water can settle away quickly (as I do where I am in Wisconsin) I prefer to use sand most of the way up and bout 4 6 inches of dirt on top of the sand.
crusher dust and cement mix – Grinding Mill . The Best Uses for Crusher Run. . ... with cement . crusher dust sprinkled with cement. weight of wet crushed . what is the correct crusher dust and cement mix ratio for . Get Price