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Topic: Gravel drive sub-base< Next Oldest | Next Newest >
LeonB
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Posted: 07 Sep. 2016,09:30 QUOTE

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
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seanandruby
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Posted: 07 Sep. 2016,18:17 QUOTE

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.

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sean
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LeonB
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Posted: 08 Sep. 2016,09:59 QUOTE

Thanks for your help seanandruby, much appreciated - hopefully this will be ok once compacted then..
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ruler

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