Hardcore ? - Different types of hardcore

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Dannyboy
Posts: 9
Joined: Thu Jun 28, 2007 12:25 am
Location: Birmingham

Post: # 20258Post Dannyboy

Hi

Just found the site and am very impressed. I have a question. I'm looking at putting down a concrete road and am wondering what sort of base product would be best to use. I have currently been told I should be using type 1 or 6f2 ? I was wondering if someone could inform me. I would like it to be able to take a HGV as well if that makes any difference.

Cheers
Dan Treanor

IanMelb
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Joined: Wed Apr 11, 2007 11:53 am
Location: East Riding

Post: # 20259Post IanMelb

The Sub-base page answered a lot of my questions about what to use and how ...

Tony McC
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Location: Warrington, People's Republic of South Lancashire
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Post: # 20263Post Tony McC

There's a wonderful publication known as SHW - Specification for Highway Works - and it categorises "hardcore" into all sorts of different types. The best stuff is Type 1, followed by Type 2. 6F2 (used to be SF2) is a 'selected fill'. It's good-ish, but not as good as type 1. It's the sort of material we'd use as a capping layer or for backfilling trenches.

If you want to run HGVs over the completed pavement, then Type 1 is what you really need.
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Dave_L
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Post: # 20317Post Dave_L

75mm Type 1 is what you need - nice and strong when a big roller has been over it a few times.
RW Gale Ltd - Civils & Surfacing Contractors based in Somerset

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