It's a layer of tar sprayed on the road surface with gravel laid on top of it.  
It's rolled into the surface by cars and trucks and sometimes heavy machinery.  
After a few days the loose gravel is swept off.  The problem is that the loose 
gravel is like riding on ball bearings... Tough on single track vehicles.  The 
freeze-thaw issues of winter make this sort of thing necessary or road have to 
be repaved in 5-10 years.

Googling "chip seal" and looking at the images will show you how it's done.

Tim

On Aug 21, 2012, at 6:16 PM, PATRICK MOORE <bertin...@gmail.com> wrote:

> I'm curious about this slippery seal coat: is it tar sprayed on
> gravel? What makes it so slippery? -- soft tar

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
To unsubscribe from this group, send email to 
rbw-owners-bunch+unsubscr...@googlegroups.com.
For more options, visit this group at 
http://groups.google.com/group/rbw-owners-bunch?hl=en.

Reply via email to