Can anyone tell me what the problem here is

[bleeman1]

Hi all, first post so not sure if pictures will link/work ok.

Can anybody tell me why the tarmac is lifting as shown in this picture. Its been down 3 months but started coming up after 3 weeks when we had some hot weather


http://yfrog.com/7gpict0003gjj

Thanks a lot

[Dave_L]

Looks like stationary steering on the spot damage to me - is this in an area of the driveway that could be affected by this?

[bleeman1]

Hi thanks for replying, yes it is where we back out of the drive onto the road. Its a real tight squeeze so all cars end up turning on the spot. Even with turning on the spot should the tarmac not be hard enough to withstand this.

[Dave_L]

You are asking too much for a newly-laid surface. With time - this could be 18months - when the surfacing has fully 'cured' it will be better placed to handle this type of vehicular movement.

All new tarmac surfaces will 'regenerate' to some extent during extended periods of hot sunny weather - you've only got to look at the amount of posts here over the past 3-4 weeks during the hot spell!

[bleeman1]

Is there anything we can do to protect the road, its a private road and it now has about a 100 of these turn marks where the tarmac is breaking up. Will these turn into potholes if we have a bad winter.

[Dave_L]

The only thing I can suggest is to spread bit grit on the affected areas - basically a fired macadam grit which is pread out over the new surface - this will act as a 'lubricant' between the tyres and the new surface.

Not ideal, but it is really your only option. You really need to speak to your contractor - but don't expect it to be free of charge.

As an aside, do you know what material was used?

[bleeman1]

The site receivers and contractors are calling it normal wear and tear and dont wont to get involved, I dont know what material was used sorry. The road was left un-finished when the builders went bust, I badgered the receiver to put the top coat on and they finally did. it was a thin top coat thought 10-15mm in places.

[DNgroundworks]

ah rite well if thats all they put down and no sub-base or binder then its going to break up.

Or is that not the case?

Even if the prep had been done correctley then the wearing course should be 30mm thick min.

[GB_Groundworks]

sounds like it was based up like normal on sites and they leave the wearing course off till everything done and all machines are off then get the surfacing lads in to lay the wearing course and make it look nice, but reading what he said they went bump before the final surface was laid.



Edited By GB_Groundworks on 1279303182