Working time of 6mm hot asphalt etc

[ODDJOBBER]

hi to repair the pot holes on the job i have ive found a supplier who will put a tonne on the back of my open back old van.
from that point if i keep it covered with a vinyl extra strong skin(used on billboards more and more thesedays, best tauplins you can get if you wnat any let me know)

anyway
from when i pick it up what advice can you give on working with it and how long will i have.
the holes will all be cut and squared and primed before.
most are around 20/40mm thick but a few are deeper

6mm is goign to be used


any advice welcomed

[GB_Groundworks]

it will depend on material your truck is made from, how often you uncover to shovel and the insulating properties of your tarps. for keeping bitmac warm we use really heavy canvas tarpaulins(1 person can just about lift each of them) 2 of them to cover our 7.5 ton wagon, double insulation and you get a good 2-3 hours out of it from a large pile, yours will cool quicker as there is less heat to start with as its a smaller pile so for safety sakes say 2 hours. dave L is your man and will correct me haha

gi

[bobbi o]

hi to repair the pot holes on the job i have ive found a supplier who will put a tonne on the back of my open back old van.
from that point if i keep it covered with a vinyl extra strong skin(used on billboards more and more thesedays, best tauplins you can get if you wnat any let me know)

anyway
from when i pick it up what advice can you give on working with it and how long will i have.
the holes will all be cut and squared and primed before.
most are around 20/40mm thick but a few are deeper

6mm is goign to be used


any advice welcomed

you sound like a gypo! what advice do you want? dont rip off your customer? as you obviously dont have a clue!

dont do it ,you'll just make an arse of it and make yourself look (even more) stupid !

[msh paving]

don't bother putting it in 20mm thick wont last 5 mins, if its a car park needs 60mm min. in 2 layers ,
a ton on the back of truck will make a lot of waste as the bottom will cool and the sides,
dont mess with plastic sheets no good at all if its fresh hot stuff will probilly melt the plastic sheets as GB says you need real heavy tarps,
will 6mm match what is on the carpark? it might be DBM,
its not like just chucking it in a hole, what you going to prime with? do you mean hot bitumin poured around the joints,if so needs doing just before placing tarmac,or are you using tackcoat which will be no use on edge joints

[Tony McC]

I tonne? On the back of an uninsulated wagon? With plastic sheets? There might be a barrowful in the centre that would be usable by the time you get to site.

Cold or cool mac doesn't compact as well as the hot stuff and has been shown to degrade much faster, reducing its service life by a phenomenal amount. That why the maintenance gangs repairing small pot-holes in the road are nearly all using HotBoxes, the ensure the material is at the required temp, and not some dodgy cold or cut-back rubbish that will have them back repairing the same hole within a couple of months.

And msh's point about the depth of repair is equally valid. A 20mm deep 'cap' will come loose in a matter of days

[Dave_L]

The loading tickets from our local ex-works tar plant has a 'disclaimer' stating that any tar loads under 3 tonnes will cool rapidly and should be laid as soon as possible.

We can load a full load on our insulated wagons at 7.30am and still have good use of it at dinnertime and beyond in the summer. Insulated bodies and a heavy hessian undersheet, covered by a fitted tarp, no hotbox for us!

[ODDJOBBER]

where can i get fully trained for this type of work as im def no gypo, im a fully qualified brickie and roofer and done over 50 block paving jobs now but cant find anywhere that does training for this

[Dave_L]

The only way you''ll get ahead with this is to work with an experienced crew. It's not an art that can be learnt on a course.

I take it you haven't done any Street Works training? That would be a good start, albeit maybe a little expensive and over the top, perhaps.

Tarmac is very unforgiving....you only have one chance.....otherwise you'll be there ripping it up the next day.......

[lutonlagerlout]

somewhat harsh there bobbi o
the fact that oddjobber is on here asking,shows at least he is willing to learn
90% of lads would have just bought the cut back stuff wacked it in and banked the moeney
TBh oddjobber ,as the lads say,if you do the prep then get tarmaccers to do the last bit
LLL

[Tony McC]

Again: this is a monumental failing of the Hard Landscape Training Group. I put forward a proposal to develop a basic 'laying macadam' course back in 2006, but it was vetoed by the vested interests of the then chairman (who just happens to own a CBP installation company and whose biggest competitors would be blacktop gangs) along with his clueless pet administrator. As a result, we have no training courses or proper accreditation for the lads on the black, and no bloody prospect of any in the near future.