This question seems to have been lost in the flood.

Several states, incl WY, are having the diamond cutting
machines cutting slots in pairs, about 2" apart, 12", long
across the "expansion" cuts that span the lanes, Then they
jackhammer out the material between, blow it clean, and
fill with "somehting".

What is the purpose of this process?

thanks

gary

wrote in message
...
This question seems to have been lost in the flood.

Several states, incl WY, are having the diamond cutting
machines cutting slots in pairs, about 2" apart, 12", long
across the "expansion" cuts that span the lanes, Then they
jackhammer out the material between, blow it clean, and
fill with "somehting".

What is the purpose of this process?

thanks

gary

I lost a wheel on a motor home in about 1987 because of the frost heaves at
the joints crossing Minnesota. Maybe this gets rid of those edges that
stuck up.

I do know what you are talking about. Here they only do 3 cutouts
about where the prime wheel travel occurs, one set toward the
right, one set toward the left. I do NOT know what they are doing
exactly as the lanes are available the next day (work done at
night).

I assume they are epoxying some type of transfer dowel in the
cuts. Once they have done all pavement joints in this manner,
they send a diamond plane down the highway to eliminate highs and
lows. Man are they ever smooth when complete.

--
______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)




wrote in message
...
This question seems to have been lost in the flood.

Several states, incl WY, are having the diamond cutting
machines cutting slots in pairs, about 2" apart, 12", long
across the "expansion" cuts that span the lanes, Then they
jackhammer out the material between, blow it clean, and
fill with "somehting".

What is the purpose of this process?

thanks

gary

On Wed, 16 Sep 2009 19:07:27 -0500, "DanG" wrote:

I do know what you are talking about. Here they only do 3 cutouts
about where the prime wheel travel occurs, one set toward the
right, one set toward the left. I do NOT know what they are doing
exactly as the lanes are available the next day (work done at
night).

I assume they are epoxying some type of transfer dowel in the
cuts. Once they have done all pavement joints in this manner,
they send a diamond plane down the highway to eliminate highs and
lows. Man are they ever smooth when complete.

They have to tie the slabs together at the expansion joints before
they do the profile grinding, or the slabs will just start to tilt
again and the "Slab Slap" will come right back.

When they are reworking the concrete freeways around here and
totally replacing large sections of broken-up concrete, the rebar
comes pre-fab in 12' x 20' panel sections that make up one slab.

And they have stacks of a separate gadget that looks like a
xylophone with hollow tubes that is an expansion joint dowel system of
some sort. They place one set of expansion tubes on each side of the
joint with free-floating dowels in between, and they keep the adjacent
slabs flat and in-line with each other, even when they are allowed to
expand and contract towards each other.

Probably used both end-to-end and side-to-side (in lesser quantities
because the main stresses are fore and aft), since you don't want the
slabs tilting, either. Trucks falling over sideways while going down
the highway is not a pretty sight. ;-)

-- Bruce --

It enhances paychecks ..



Trains are lower cost , so we would lose too many jobs

in America , if we had safer and more luxurious trains .

Overheard on a train .....
" Just imagine if that lady over there were
driving a car !



Women statistically have twice the accident rate , men
do per mile ,
IF THEY ARE WORKING .
All the female fighter pilots are dead . I saw one
approach a carrier , she could NOT operate the ejaculation
machine .
Next an old navy A7 , both men easily ejected ,
were picked up in good health .
1963 , Edwards ,F104 2 seater , flame out 25000 ft ..
F104 has no wings ,he pointed the nose down and
pulled up a few feet from the ground , punched the
gear into the fuse' , ejected as it swerved onto the grass ,
he went up ( back seat goes down ) in a
NON "zer-zero" seat , i saw him tossing out his chute .
He made it .... Women can not fly airplanes .
do you know anyone who boards an airplane with a
female pilot ! Or even a non American trained pilot .
PBS , Panama flight xxx , He did NOT use emergency
indicator that would have shown his ttrue attitude .
Artificial horizon was lying to him . The plane went strate
in at 800 MPH , the emergency instrument is in working condition .
Airspeed is first . If ya pull back on stick , in a extreme roll ,
speed DONT decrease .
In level flight , it slows .

More stats . 99 % of drivers are NOT working , they are
fleeing something , taxes , a speeding ticket or a
domestic violence arrest or ...