Failed chip seal

[Maha]

But this morning I noticed that large patches of the new chip have "fallen off". There are great bald patches in the so-called "repaired" sections. All within a month.

There is quite a bit of that happening in the King Country/Waitomo/Waikato regions...noticed alot of what you speak of yesterday coming back from the Naki.

[awa355]

While we're on about road surface's, I've noticed a lot of bends/corners in the Waikato/BoP, have been re laid with a brown chip. Runs from the entrance to the exit of most corners.

Is this a new type of seal? being trialled? . If it is an improved surface, re gripping, why not do the braking zones before the corners?.

[5150]

Has anyone ridden the new Pukete Bridge fourlane? Especially from The Base to the Bridge? Road just opened, and it is worse then a grovel road. All pack chip and already lines are marked. But you can see and feel cracks and holes. The road has only been opened for less then 2 weeks since new. WTF???

[slofox]

While we're on about road surface's, I've noticed a lot of bends/corners in the Waikato/BoP, have been re laid with a brown chip. Runs from the entrance to the exit of most corners.

Is this a new type of seal? being trialled? . If it is an improved surface, re gripping, why not do the braking zones before the corners?.

The guy that does this work is a customer of mine. He told me all about it.

It is a better grip surface and it is glued down with some fancy-arse bond. But I suspect the placement is designed to stop cars sliding into each other, not for bikes in braking zones. Oh and it's expensive too so the application is not that generous. How surprising.

Has anyone ridden the new Pukete Bridge fourlane? Especially from The Base to the Bridge? Road just opened, and it is worse then a grovel road. All pack chip and already lines are marked. But you can see and feel cracks and holes. The road has only been opened for less then 2 weeks since new. WTF???

That's not the top coat yet. They'll redo it once all the work is finished. Or so I am told...

[ducatilover]

Poor quality NZ roads? Oh surely ye jest...

[5150]

That's not the top coat yet. They'll redo it once all the work is finished. Or so I am told...

They'd better

[Zedder]

The guy that does this work is a customer of mine. He told me all about it.

It is a better grip surface and it is glued down with some fancy-arse bond. But I suspect the placement is designed to stop cars sliding into each other, not for bikes in braking zones. Oh and it's expensive too so the application is not that generous. How surprising.



That's not the top coat yet. They'll redo it once all the work is finished. Or so I am told...

You're right slofox, it is about stopping cars sliding although not into each other but sliding off the road. The "aggregate" is artificial and
has a higher PSV (Polished Stone Value) than natural aggregate and so retains its sharp edges longer after weathering etc. This gives a better skid resistance value.

As far as the Pukete road goes, the top coat will be applied after all the other work has been done, normal traffic volumes have settled the road in and engineers are sure there's not going to be a problem.

[mashman]

But this morning I noticed that large patches of the new chip have "fallen off". There are great bald patches in the so-called "repaired" sections. All within a month.

What's with this then? Did the contractor use flour and water paste to stick it down with? Seems like a crap job to me but then I know nothing about road sealing.

The got run over repeatedly and died. They are now ghost chip seal

[slofox]

The got run over repeatedly and died. They are now ghost chip seal

Ahhhh! No wonder dey's gone den...

[unstuck]

I think a lot of it comes back to money, NZ is not big enough economically to put the money into getting a good base for most of our roads. A few of the road workers that I know, know a piece of road is not going to be fixed properly because the base and surrounding drainage issues just will not get done, to a level where any surface will stay where you put it. The terrain and geology of this country have a big part to play also in my opinion, hard to build roads over old swamps and river beds that are moving all the time. I know I would be frustrated doing a job that is only a temporary fix, but the guys laying the stuff do not hold the purse strings and can only do what they are payed to do. I do acknowledge that there are some pretty slack sealing crews getting around though.

[AD345]

There is quite a bit of that happening in the King Country/Waitomo/Waikato regions...noticed alot of what you speak of yesterday coming back from the Naki.

I noticed that yesterday as well.

We were coming back from Whangamomona and the stretch from the turn off to Taumaranui/National Park through to Te Kuiti had some of the slipperiest surfaces I have come across

It got quite sphincter clenching on some of the bends with patches on them

[nosebleed]

The got run over repeatedly and died. They are now ghost chip seal

I see what you did there. I think you're very witty, but Monique thinks you're dumb.

Just text "dung". Seems to be the only roading advisory initiative that has gained any credence.

[Bald Eagle]

least we can blame our shit roads when tourists throw their van s down the road

Sent from my MB525 using Tapatalk 2

[darkwolf]

I come up to Hamilton about 4 times a year and each time I come up I think your roads are getting worse. When will your contractors learn to make a seal that stays longer than two weeks, joins to the previous road surface so it doesn't feel like a speed bump and doesn't bunch up when a truck goes over it.

I swear after the quakes we had some of your roadies down here, roads stopped being joined properly, pot holes started forming where new seal had just been put down and the roads were going shiny almost immediately after being put down. Thankfully it seems to have stopped.

[BOGAR]

There are quite a lot of factors that can cause the road to lose chip. Some have been mentioned and others are the temperature during the day or night. If it was too cold to seal which can happen on some shaded corners the road will fail. Some of the roads that looked great and then get a reseal (which then scabs) were done because they did not meet the new SCRIM intervention levels. Basically how much grip the road has in certain locations. Corners and areas of high stress breaking need more grip. The amount of cutter and if the bitumen has been modified to the local conditions are part of a formula that goes into the sealing information. It isn't always right or the factors on the day change too much for it to work successfully. By then however they are committed to sealing the road and they can only hope it holds. I'm not a sealing manager but I do look after all the data about the roads so I have been trying to teach myself about all the different factors of sealing. It is actually quite an art to getting it right.
Some more bad news for you though:
Funding has been cut by NZTA for up to the next 10 years and 1 of the possible changes may be lowering the speed limits on some roads to help them last longer or to build the roads to a lower level (less up front costs) to try and stretch the budget. This means they don't last as long but can be afforded now. There are a lot of projects that will not be done any time soon and only committed projects or ones of national significance will be built.
If we didn't allow the really bad cars with worn mismatched tyres ect we could stop wasting money trying to stop them crashing.