I have just spent the day digging out some very hard ground for some new aspenstone concrete pavers (600 X 400). I originally intended to put down road base and whacker packer this, followed by bricky sand on top, but the ground is to hard to get much deeper. About half the paved area is going over an old paved area (old pavers have been removed) so ground here is already well compacted. The new area is very gravelly. My change in plan is to fill the area with crusher dust or bricky sand to the...

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