what makes roads all different colours...some tarmac is green blue red
etc.....is it the aggregate used ?

On 10/08/2020 08:57, Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue red
etc.....is it the aggregate used ?

The colour is in the binder.

--
Colin Bignell

In article ,
Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue red
etc.....is it the aggregate used ?


In days gone by, you could tell you were in Lanarkshi all their roads
were red.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

On 10/08/2020 09:08, nightjar wrote:
On 10/08/2020 08:57, Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue red
etc.....is it the aggregate used ?

The colour is in the binder.

what is the binder exactly ? ....

On 10/08/2020 10:09, charles wrote:
In article ,
Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue red
etc.....is it the aggregate used ?


In days gone by, you could tell you were in Lanarkshi all their roads
were red.

never noticed

"charles" wrote in message
...
In article ,
Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue red
etc.....is it the aggregate used ?


In days gone by, you could tell you were in Lanarkshi all their roads
were red.

Was there any reason for the tarmac being made with different binder
colours? Was it just for cosmetic reasons or did the different colours
signify different frictional properties? Nowadays they tend to use red
tarmac close to a junction to signify "STOP", and there's the light-brown
tarmac with a very fine grit - possibly a layer that is applied above the
tarmac - as an extra-grippy layer on sharp bends and steep hills. But those
are recent phenomena. Before that, the whole road was uniformly black/grey,
red or pale green.

On Monday, 10 August 2020 10:19:14 UTC+1, charles wrote:
In article ,
Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue red
etc.....is it the aggregate used ?


In days gone by, you could tell you were in Lanarkshi all their roads
were red.

Exactly what I remember.

You can often see county boundaries reflected in changes to road surfaces - but sometimes the differences are rather more subtle.

Also, some counties (or whatever level of admin applies) make agreements with neighbouring bodies so that they end works at sensible places rather than strict boundaries.

In article ,
polygonum_on_google wrote:
On Monday, 10 August 2020 10:19:14 UTC+1, charles wrote:
In article , Jim GM4DHJ ...
wrote:
what makes roads all different colours...some tarmac is green blue
red etc.....is it the aggregate used ?


In days gone by, you could tell you were in Lanarkshi all their
roads were red.

Exactly what I remember.

You can often see county boundaries reflected in changes to road surfaces
- but sometimes the differences are rather more subtle.

Also, some counties (or whatever level of admin applies) make agreements
with neighbouring bodies so that they end works at sensible places rather
than strict boundaries.

There was, of course, a picture in Punch where the road roller did not
cross the county boundary. There was a ridge on the boundary itself between
the rollers of the different counties.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

On Monday, 10 August 2020 10:36:36 UTC+1, NY wrote:
"charles" wrote in message
...
In article ,
Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue red
etc.....is it the aggregate used ?


In days gone by, you could tell you were in Lanarkshi all their roads
were red.

Was there any reason for the tarmac being made with different binder
colours? Was it just for cosmetic reasons or did the different colours
signify different frictional properties? Nowadays they tend to use red
tarmac close to a junction to signify "STOP", and there's the light-brown
tarmac with a very fine grit - possibly a layer that is applied above the
tarmac - as an extra-grippy layer on sharp bends and steep hills. But those
are recent phenomena. Before that, the whole road was uniformly black/grey,
red or pale green.

I don't think it was the binder. As I remember, the actual stone chips were a different colour.

"There was a time was when all roads around about Lanark were red, the red granite for their surfaces being sourced at a local quarry near Carmichael, just a few miles from Lanark. I once spoke to a retired 'bus driver who believed that these roads were actually safer and more pleasant to drive at night because the edges of the road were more visible in the light from headlamps: an interesting observation which might well be true.

Unfortunately, as these roads require repair, black asphalt is used so the number of true red roads is now limited to a few minor routes such as this one near Roberton. If you wish, you can take a virtual drive along this road (unfortunately not at night!) if you look at this map and drag the little yellow man down to the red cross and pan around. Interestingly, if you "drive" back away from this little bridge, you can see where the road changes from red to the usual grey/black colour."

https://www.trekearth.com/gallery/Eu...oto1346359.htm

On 10/08/2020 10:34, Jim GM4 DHJ ... wrote:
On 10/08/2020 09:08, nightjar wrote:
On 10/08/2020 08:57, Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue
red etc.....is it the aggregate used ?

The colour is in the binder.

what is the binder exactly ? ....
and how do they get the colour ? ....

On 10/08/2020 11:09, polygonum_on_google wrote:
On Monday, 10 August 2020 10:36:36 UTC+1, NY wrote:
"charles" wrote in message
...
In article ,
Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue red
etc.....is it the aggregate used ?


In days gone by, you could tell you were in Lanarkshi all their roads
were red.

Was there any reason for the tarmac being made with different binder
colours? Was it just for cosmetic reasons or did the different colours
signify different frictional properties? Nowadays they tend to use red
tarmac close to a junction to signify "STOP", and there's the light-brown
tarmac with a very fine grit - possibly a layer that is applied above the
tarmac - as an extra-grippy layer on sharp bends and steep hills. But those
are recent phenomena. Before that, the whole road was uniformly black/grey,
red or pale green.

I don't think it was the binder. As I remember, the actual stone chips were a different colour.

"There was a time was when all roads around about Lanark were red, the red granite for their surfaces being sourced at a local quarry near Carmichael, just a few miles from Lanark. I once spoke to a retired 'bus driver who believed that these roads were actually safer and more pleasant to drive at night because the edges of the road were more visible in the light from headlamps: an interesting observation which might well be true.

Unfortunately, as these roads require repair, black asphalt is used so the number of true red roads is now limited to a few minor routes such as this one near Roberton. If you wish, you can take a virtual drive along this road (unfortunately not at night!) if you look at this map and drag the little yellow man down to the red cross and pan around. Interestingly, if you "drive" back away from this little bridge, you can see where the road changes from red to the usual grey/black colour."

https://www.trekearth.com/gallery/Eu...oto1346359.htm

that is not the same red you get these days....

On Monday, 10 August 2020 11:26:51 UTC+1, Jim GM4DHJ ... wrote:
On 10/08/2020 11:09, polygonum_on_google wrote:
On Monday, 10 August 2020 10:36:36 UTC+1, NY wrote:
"charles" wrote in message
...
In article ,
Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue red
etc.....is it the aggregate used ?


In days gone by, you could tell you were in Lanarkshi all their roads
were red.

Was there any reason for the tarmac being made with different binder
colours? Was it just for cosmetic reasons or did the different colours
signify different frictional properties? Nowadays they tend to use red
tarmac close to a junction to signify "STOP", and there's the light-brown
tarmac with a very fine grit - possibly a layer that is applied above the
tarmac - as an extra-grippy layer on sharp bends and steep hills. But those
are recent phenomena. Before that, the whole road was uniformly black/grey,
red or pale green.

I don't think it was the binder. As I remember, the actual stone chips were a different colour.

"There was a time was when all roads around about Lanark were red, the red granite for their surfaces being sourced at a local quarry near Carmichael, just a few miles from Lanark. I once spoke to a retired 'bus driver who believed that these roads were actually safer and more pleasant to drive at night because the edges of the road were more visible in the light from headlamps: an interesting observation which might well be true.

Unfortunately, as these roads require repair, black asphalt is used so the number of true red roads is now limited to a few minor routes such as this one near Roberton. If you wish, you can take a virtual drive along this road (unfortunately not at night!) if you look at this map and drag the little yellow man down to the red cross and pan around. Interestingly, if you "drive" back away from this little bridge, you can see where the road changes from red to the usual grey/black colour."

https://www.trekearth.com/gallery/Eu...oto1346359.htm

that is not the same red you get these days....

Never said it was.

charles write "In days gone by ..." which gives a hint that it was a historical observation.

And it is the red that I too remember.

On 10/08/2020 11:33, polygonum_on_google wrote:
In days gone by, you could tell you were in Lanarkshi all their roads
were red.
Was there any reason for the tarmac being made with different binder
colours? Was it just for cosmetic reasons or did the different colours
signify different frictional properties? Nowadays they tend to use red
tarmac close to a junction to signify "STOP", and there's the light-brown
tarmac with a very fine grit - possibly a layer that is applied above the
oh right

On 10/08/2020 10:34, Jim GM4 DHJ ... wrote:
On 10/08/2020 09:08, nightjar wrote:
On 10/08/2020 08:57, Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue
red etc.....is it the aggregate used ?

The colour is in the binder.

what is the binder exactly ? ....

It is described as asphalt, but the manufacturers don't go into much
detail. e.g.:

https://www.tarmac.com/solutions/agg...lt/ulticolour/

--
Colin Bignell

Yes just ask the guys who do your drive you can have it many colours though
the stripped ones seem pretty rare..
Brian

--
----- --
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"nightjar" wrote in message
...
On 10/08/2020 08:57, Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue red
etc.....is it the aggregate used ?

The colour is in the binder.

--
Colin Bignell

"polygonum_on_google" wrote in message
...
On Monday, 10 August 2020 10:36:36 UTC+1, NY wrote:
"charles" wrote in message
...
In article ,
Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue red
etc.....is it the aggregate used ?


In days gone by, you could tell you were in Lanarkshi all their
roads
were red.

Was there any reason for the tarmac being made with different binder
colours? Was it just for cosmetic reasons or did the different colours
signify different frictional properties? Nowadays they tend to use red
tarmac close to a junction to signify "STOP", and there's the light-brown
tarmac with a very fine grit - possibly a layer that is applied above the
tarmac - as an extra-grippy layer on sharp bends and steep hills. But
those
are recent phenomena. Before that, the whole road was uniformly
black/grey,
red or pale green.

I don't think it was the binder. As I remember, the actual stone chips
were a different colour.

"There was a time was when all roads around about Lanark were red, the red
granite for their surfaces being sourced at a local quarry near
Carmichael, just a few miles from Lanark. I once spoke to a retired 'bus
driver who believed that these roads were actually safer and more pleasant
to drive at night because the edges of the road were more visible in the
light from headlamps: an interesting observation which might well be true.

Unfortunately, as these roads require repair, black asphalt is used so the
number of true red roads is now limited to a few minor routes such as this
one near Roberton. If you wish, you can take a virtual drive along this
road (unfortunately not at night!) if you look at this map and drag the
little yellow man down to the red cross and pan around. Interestingly, if
you "drive" back away from this little bridge, you can see where the road
changes from red to the usual grey/black colour."

https://www.trekearth.com/gallery/Eu...oto1346359.htm


I remember roads in Wakefield when we moved there in the early 1970s had red
tarmac, but it was a high proportion of red chips in amongst black ones,
rather than *all* red ones as in the Roberton picture. It was more of a
subtle tint than an in-your-face red road.

On 10/08/2020 12:01, nightjar wrote:
On 10/08/2020 10:34, Jim GM4 DHJ ... wrote:
On 10/08/2020 09:08, nightjar wrote:
On 10/08/2020 08:57, Jim GM4DHJ ... wrote:
what makes roads all different colours...some tarmac is green blue
red etc.....is it the aggregate used ?

The colour is in the binder.

what is the binder exactly ? ....

It is described as asphalt, but the manufacturers don't go into much
detail. e.g.:

https://www.tarmac.com/solutions/agg...lt/ulticolour/

oh right