SUPERPAVE Digest 438
Topics covered in this issue include:
3) Laser or Infrared for Lift Thickness Determination?
by
· To:
· Subject: Laser or Infrared for Lift Thickness Determination?
· From:
· Date: Tue, 16 Jan 2001 15:38:36 -0600
I was reading an article about this device. It is a laser or infrared device
that can determine lift or layer thickness. I think this applied to both
pavment materials. Does anyone have any information on it?
Kenneth Hobson
Bituminous Branch - Oklahoma DOT
405-522-4918, 405-522-0552 fax
SUPERPAVE Digest 440
Topics covered in this issue include:
3) GPR
by
4) Re: GPR
by
· To:
· Subject: GPR
· From:
· Date: Thu, 18 Jan 2001 13:00:33 -0600
In my previous post I requested information on a laser or infrared device to
measure lift or layer thickness. I should have realized that it was the GPR
(Ground Penetrating Radar) that I was referring to. The report was
"Developement of a Radar Analysis Program for Layer Thickness Determinations" .
The research project was conducted by Emannuel Fernando at the Texas
Transportation Institute (TTI). For more information on the project contact
Bruce Dietrich at (850) 414-4371,
I'd seen some of this being researched TTI a couple of years ago.
Kenneth Hobson
Bituminous Branch - Oklahoma DOT
(405) 522-4918, (405) 522-0552 fax
· To:
· Subject: Re: GPR
· From:
· Date: Thu, 18 Jan 2001 17:42:52 EST
Yes, laser or IR have too short a wavelength to "see" through a pavement.
I've seen the GPR in action and it is quite impressive and extremely accurate
in the right hands. It's being used quite a bit in Texas and Canada by a
couple of folks. If you want to talk to the guy at TTI who has been doing a
lot of the software development work and implementation, talk to Tom Scullion
979 845 9913.