Hello there
I'm currently in the process of replacing my concrete driveway with gravel. Concrete is now removed and i was planning to lay geo-textile before 150mm DpT1 and then the gravel.
I have a question though regarding the existing sub-base material which was under the concrete, it looks like this is Ash/Cinders (very similar to the photo in the aggregates section of the website) I have dug most of this off to level the drive in preparation for laying the geo textile but there is still around 30mm on top of the sub-grade. Will i be ok to lay the geo-textile over this? I'm just concerned this seems quite fine and crumbly and will the textile slip around after the DpT1 is laid on top?
I have a photo but i'm unsure how to post it here?!
many thanks in advance!
Leon
Gravel drive sub-base
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seanandruby
- Site Admin
- Posts: 4713
- Joined: Mon Jun 26, 2006 11:01 am
- Location: eastbourne
We used to use clinker as a sub base years ago. Apart from footpaths done in pfa o have only ever used it under a concrete, or tarmac overlay. It does compact well and has load bearing qualities. But i have never used it under a stone drive. Others may have used it for gravel drives and can give you the green light.
sean