Video transcript
| Timestamp |
Visual information |
Audio information |
| 00:00:01 |
|
You might not think it, but there?s a craft to chipsealing the road. |
| 00:00:05 |
|
Yeah it?s a bit of a black art. |
| 00:00:06 |
|
And the magic is all in the process. |
| 00:00:09 |
|
Prior to chipseal, we've got to construct the granular pavement itself. |
| 00:00:13 |
|
The tools of the trade ? a lot of big?machines. |
| 00:00:16 |
|
So this is an in-situ stabiliser. |
| 00:00:19 |
|
We place the aggregates ahead of the in-situ stabiliser?turning up, |
| 00:00:23 |
|
so we place it, shape it roughly, |
| 00:00:26 |
|
compact it, and then once we're ready to go, |
| 00:00:29 |
|
we spread the cement on the ground and then the in-situ recycler, or stabiliser, |
| 00:00:35 |
|
moves over that?surface mixing the cement with the aggregate. |
| 00:00:39 |
|
Stabilising the layers improves the performance of?the pavement |
| 00:00:43 |
|
and that means: |
| 00:00:44 |
|
longer life expectancy and less maintenance. |
| 00:00:46 |
|
Adding cement into the mix is?called binding. |
| 00:00:50 |
|
It improves the moisture resilience of the pavement. |
| 00:00:53 |
|
With a normal unbound road or?pavement |
| 00:00:56 |
|
it's just the process of compacting and shaping aggregates, |
| 00:00:59 |
|
and then sealing. |
| 00:01:01 |
|
So, in this?situation we're looking for more performance from the pavement. |
| 00:01:04 |
|
So we're adding in cement so the road?lasts longer. |
| 00:01:07 |
|
A grader levels the stones so they fit the desired shape and height of the road. |
| 00:01:12 |
|
A water?cart sprays water so the stones can be easily compacted. |
| 00:01:17 |
|
Then it's the rollers turn |
| 00:01:19 |
|
and we're?ready to start chipsealing. |
| 00:01:22 |
|
Which is used mainly for waterproofing but also for our skid resistance, |
| 00:01:27 |
|
so we've got grip on the road in both wet and dry conditions. |
| 00:01:30 |
|
First step of laying the chipseal is?getting the prime seal down. |
| 00:01:34 |
|
The prime is bitumen mixed with water in a light chip layer. |
| 00:01:38 |
|
I guess?the job of the prime seal is like you?d have with painting your house. |
| 00:01:42 |
|
So you put your prime coat?layer down, |
| 00:01:44 |
|
and that sort of bonds to the surface that you're applying it to. |
| 00:01:48 |
|
So it's main job is?to penetrate into our granular pavement. |
| 00:01:53 |
|
Three coats of chipseal goes over the top sticking?to the prime. |
| 00:01:57 |
|
We apply a coat of hot bitumen and then a grade two chip, |
| 00:02:01 |
|
which is a big stone?size, |
| 00:02:03 |
|
and then another application of bitumen with a grade four chip, |
| 00:02:07 |
|
which is a slightly?smaller size. |
| 00:02:09 |
|
So the idea is that the large and small stone interlock with each other |
| 00:02:14 |
|
and?make a nice surface for us to drive on. |
| 00:02:18 |
|
A final layer of bitumen and smaller grade five chip |
| 00:02:21 |
|
will also be added before the surface is complete. |
| 00:02:24 |
|
It?s all about safety. |
| 00:02:26 |
|
And our chipseal?provides our skid resistance so that we've got |
| 00:02:31 |
|
good friction when a car needs to stop quickly?so it doesn't skid. |
| 00:02:35 |
|
Bedding in the chip orientates the stone so their flat edges face down |
| 00:02:40 |
|
and the?textured edge is up. |
| 00:02:41 |
|
There's a bit of an art to it. |
| 00:02:43 |
|
It all looks like a very simple process from the?outset |
| 00:02:46 |
|
but there's a lot of work that goes on in the background. |
| 00:02:48 |
|
That's why there's normally a few?grey hairs around when we're spraying the road. |
| 00:02:51 |
|
Luckily the weather has been pretty fine |
| 00:02:54 |
|
and the bulk of the pavement construction is finished. |
| 00:02:56 |
|
Now the teams are working on the final?surfacing and a road is taking shape. |
00:00:01 video transcript
| Time |
00:00:01 |
| Visual info |
|
| Audio info |
You might not think it, but there?s a craft to chipsealing the road. |
00:00:05 video transcript
| Time |
00:00:05 |
| Visual info |
|
| Audio info |
Yeah it?s a bit of a black art. |
00:00:06 video transcript
| Time |
00:00:06 |
| Visual info |
|
| Audio info |
And the magic is all in the process. |
00:00:09 video transcript
| Time |
00:00:09 |
| Visual info |
|
| Audio info |
Prior to chipseal, we've got to construct the granular pavement itself. |
00:00:13 video transcript
| Time |
00:00:13 |
| Visual info |
|
| Audio info |
The tools of the trade ? a lot of big?machines. |
00:00:16 video transcript
| Time |
00:00:16 |
| Visual info |
|
| Audio info |
So this is an in-situ stabiliser. |
00:00:19 video transcript
| Time |
00:00:19 |
| Visual info |
|
| Audio info |
We place the aggregates ahead of the in-situ stabiliser?turning up, |
00:00:23 video transcript
| Time |
00:00:23 |
| Visual info |
|
| Audio info |
so we place it, shape it roughly, |
00:00:26 video transcript
| Time |
00:00:26 |
| Visual info |
|
| Audio info |
compact it, and then once we're ready to go, |
00:00:29 video transcript
| Time |
00:00:29 |
| Visual info |
|
| Audio info |
we spread the cement on the ground and then the in-situ recycler, or stabiliser, |
00:00:35 video transcript
| Time |
00:00:35 |
| Visual info |
|
| Audio info |
moves over that?surface mixing the cement with the aggregate. |
00:00:39 video transcript
| Time |
00:00:39 |
| Visual info |
|
| Audio info |
Stabilising the layers improves the performance of?the pavement |
00:00:43 video transcript
| Time |
00:00:43 |
| Visual info |
|
| Audio info |
and that means: |
00:00:44 video transcript
| Time |
00:00:44 |
| Visual info |
|
| Audio info |
longer life expectancy and less maintenance. |
00:00:46 video transcript
| Time |
00:00:46 |
| Visual info |
|
| Audio info |
Adding cement into the mix is?called binding. |
00:00:50 video transcript
| Time |
00:00:50 |
| Visual info |
|
| Audio info |
It improves the moisture resilience of the pavement. |
00:00:53 video transcript
| Time |
00:00:53 |
| Visual info |
|
| Audio info |
With a normal unbound road or?pavement |
00:00:56 video transcript
| Time |
00:00:56 |
| Visual info |
|
| Audio info |
it's just the process of compacting and shaping aggregates, |
00:00:59 video transcript
| Time |
00:00:59 |
| Visual info |
|
| Audio info |
and then sealing. |
00:01:01 video transcript
| Time |
00:01:01 |
| Visual info |
|
| Audio info |
So, in this?situation we're looking for more performance from the pavement. |
00:01:04 video transcript
| Time |
00:01:04 |
| Visual info |
|
| Audio info |
So we're adding in cement so the road?lasts longer. |
00:01:07 video transcript
| Time |
00:01:07 |
| Visual info |
|
| Audio info |
A grader levels the stones so they fit the desired shape and height of the road. |
00:01:12 video transcript
| Time |
00:01:12 |
| Visual info |
|
| Audio info |
A water?cart sprays water so the stones can be easily compacted. |
00:01:17 video transcript
| Time |
00:01:17 |
| Visual info |
|
| Audio info |
Then it's the rollers turn |
00:01:19 video transcript
| Time |
00:01:19 |
| Visual info |
|
| Audio info |
and we're?ready to start chipsealing. |
00:01:22 video transcript
| Time |
00:01:22 |
| Visual info |
|
| Audio info |
Which is used mainly for waterproofing but also for our skid resistance, |
00:01:27 video transcript
| Time |
00:01:27 |
| Visual info |
|
| Audio info |
so we've got grip on the road in both wet and dry conditions. |
00:01:30 video transcript
| Time |
00:01:30 |
| Visual info |
|
| Audio info |
First step of laying the chipseal is?getting the prime seal down. |
00:01:34 video transcript
| Time |
00:01:34 |
| Visual info |
|
| Audio info |
The prime is bitumen mixed with water in a light chip layer. |
00:01:38 video transcript
| Time |
00:01:38 |
| Visual info |
|
| Audio info |
I guess?the job of the prime seal is like you?d have with painting your house. |
00:01:42 video transcript
| Time |
00:01:42 |
| Visual info |
|
| Audio info |
So you put your prime coat?layer down, |
00:01:44 video transcript
| Time |
00:01:44 |
| Visual info |
|
| Audio info |
and that sort of bonds to the surface that you're applying it to. |
00:01:48 video transcript
| Time |
00:01:48 |
| Visual info |
|
| Audio info |
So it's main job is?to penetrate into our granular pavement. |
00:01:53 video transcript
| Time |
00:01:53 |
| Visual info |
|
| Audio info |
Three coats of chipseal goes over the top sticking?to the prime. |
00:01:57 video transcript
| Time |
00:01:57 |
| Visual info |
|
| Audio info |
We apply a coat of hot bitumen and then a grade two chip, |
00:02:01 video transcript
| Time |
00:02:01 |
| Visual info |
|
| Audio info |
which is a big stone?size, |
00:02:03 video transcript
| Time |
00:02:03 |
| Visual info |
|
| Audio info |
and then another application of bitumen with a grade four chip, |
00:02:07 video transcript
| Time |
00:02:07 |
| Visual info |
|
| Audio info |
which is a slightly?smaller size. |
00:02:09 video transcript
| Time |
00:02:09 |
| Visual info |
|
| Audio info |
So the idea is that the large and small stone interlock with each other |
00:02:14 video transcript
| Time |
00:02:14 |
| Visual info |
|
| Audio info |
and?make a nice surface for us to drive on. |
00:02:18 video transcript
| Time |
00:02:18 |
| Visual info |
|
| Audio info |
A final layer of bitumen and smaller grade five chip |
00:02:21 video transcript
| Time |
00:02:21 |
| Visual info |
|
| Audio info |
will also be added before the surface is complete. |
00:02:24 video transcript
| Time |
00:02:24 |
| Visual info |
|
| Audio info |
It?s all about safety. |
00:02:26 video transcript
| Time |
00:02:26 |
| Visual info |
|
| Audio info |
And our chipseal?provides our skid resistance so that we've got |
00:02:31 video transcript
| Time |
00:02:31 |
| Visual info |
|
| Audio info |
good friction when a car needs to stop quickly?so it doesn't skid. |
00:02:35 video transcript
| Time |
00:02:35 |
| Visual info |
|
| Audio info |
Bedding in the chip orientates the stone so their flat edges face down |
00:02:40 video transcript
| Time |
00:02:40 |
| Visual info |
|
| Audio info |
and the?textured edge is up. |
00:02:41 video transcript
| Time |
00:02:41 |
| Visual info |
|
| Audio info |
There's a bit of an art to it. |
00:02:43 video transcript
| Time |
00:02:43 |
| Visual info |
|
| Audio info |
It all looks like a very simple process from the?outset |
00:02:46 video transcript
| Time |
00:02:46 |
| Visual info |
|
| Audio info |
but there's a lot of work that goes on in the background. |
00:02:48 video transcript
| Time |
00:02:48 |
| Visual info |
|
| Audio info |
That's why there's normally a few?grey hairs around when we're spraying the road. |
00:02:51 video transcript
| Time |
00:02:51 |
| Visual info |
|
| Audio info |
Luckily the weather has been pretty fine |
00:02:54 video transcript
| Time |
00:02:54 |
| Visual info |
|
| Audio info |
and the bulk of the pavement construction is finished. |
00:02:56 video transcript
| Time |
00:02:56 |
| Visual info |
|
| Audio info |
Now the teams are working on the final?surfacing and a road is taking shape. |
