SUPERPAVE Digest 27
Topics covered in this issue include:
4) Construction Advice
by "William O'Reilly" <>
5) Re: Construction Advice
by Affan Habib <>
6) Construction Advice -Reply
by Paul Mack <>
7) RE: Construction Advice
by "Gerald Huber" <>
10) Re: Construction Advice
by Delmar Salomon <>
13) Re: Construction Advice
by Chris Blades <>
16) RE: Superpave Construction Advice
by
19) RE: Superpave Construction Advice
by MARSHA RAY <>
21) RE: Superpave Construction Advice
by MARSHA RAY <>
24) RE: Superpave Construction Advice
by MARSHA RAY <>
26) RE: Superpave Construction Advice
by MARSHA RAY <>
Date: Fri, 22 Aug 1997 14:19:45 -0500
From: "William O'Reilly" <>
To: <>
Subject: Construction Advice
I serve as a Project Engineer for the Mississippi DOT and am about to start
an overlay which will be the first SUPERPAVE project that my office has
been associated with. What advice can anyone give me that I could use as
Project Engineer and that would be helpful to the personnel from my office
who will be on the road. An help will be appreciated.
William O'Reilly
Work email:
Home email:
Date: Fri, 22 Aug 1997 15:15:30 -0500 (CDT)
From: Affan Habib <>
To:
Cc:
Subject: Re: Construction Advice
You may want to contact Doughlas Shilling at (913)776-5077. His
construction company Shilling Construction Co., constructed Superpave
base and surface course for the K-177 last year. I was involved in the
design as a graduate student at Kansas State University. I might answer
any specific question regarding the design. However, as far as the
construction is concerned Dough Shilling, I think, would be extremely
helpful. You might also contact Fred Swell at (913)776-4714.
Good luck!
Affan Habib
Graduate Research Assistant
Kansas State university
On Fri, 22 Aug 1997, William O'Reilly wrote:
> I serve as a Project Engineer for the Mississippi DOT and am about to start
> an overlay which will be the first SUPERPAVE project that my office has
> been associated with. What advice can anyone give me that I could use as
> Project Engineer and that would be helpful to the personnel from my office
> who will be on the road. An help will be appreciated.
>
> William O'Reilly
>
> Work email:
> Home email:
>
>
>
Date: Mon, 25 Aug 1997 10:03:15 -0500
From: Paul Mack <>
To:
Subject: Construction Advice -Reply
See Roads and Bridges August 97 for a good article.
Also see Lead State Guidance Statements issued last Spring. They can
be found on the Internet at the South Central Superpave Center. If you
cannot access that, let me know and we'll electronically transfer the
document to you.
Paul Mack
Date: Mon, 25 Aug 1997 07:45:00 -0700
From: "Gerald Huber" <>
To:
Subject: RE: Construction Advice
Your question is open enough that it is difficult to answer. In many ways
Superpave will be like other hot mix but depending on the experience you
have with current Marshall mixes you may need to do some things differently.
Plant operations and trucking should be no different. Superpave mixes seem
to be more resistant to segregation which is good news.
The mix should lay pretty much the same. The rollers need to be right tight
to the paver. No hanging back waiting for the mix to cool. You may not
have any problems with compaction. If you do it will either be that the mix
is tender or that density will be hard to get.
Tender has shown up in some mixes. It appears during the middle of
compaction when temperatures are 250 to 225 F. If the tenderness is not too
severe the best solution is to hold off rolling during the tender
temperature range. If it is severe call back.
Density can be hard to achieve if lift thicknesses are too thin. Florida
has found that mixes were permeable when laid at the same thickness as the
old Marshall mixes. Moving to 4 time nominal maximum size greatly eases
compaction.
I think that should be the main things to look out for. As I said, write
back if something comes up.
Gerry Huber
Heritage Research Group
317 390 3141 tel
317 486 5095 fax
----------
From:
To: Gerald Huber; superpave
Subject: Construction Advice
Date: Wednesday, January 01, 1997 12:19PM
From:
Date: Fri, Aug 22, 1997 12:19 PM
Subject: Construction Advice
To: Gerald Huber; superpave
I serve as a Project Engineer for the Mississippi DOT and am about to start
an overlay which will be the first SUPERPAVE project that my office has
been associated with. What advice can anyone give me that I could use as
Project Engineer and that would be helpful to the personnel from my office
who will be on the road. An help will be appreciated.
William O'Reilly
Work email:
Home email:
From: "William O'Reilly" <>
To: <>
Subject: Construction Advice
Date: Tue, 26 Aug 97 07:25:40 +0600
From: "Kenneth Hobson" <>
To: "Superpave Listserve" <>
Subject: Ken's newest Superpave Spreadsheet 4u
I have placed my latest Lotus123 v5 Superpave spreadsheet in the zip file:
http://www.telepath.com/khobson/odot/liqlab/spchart.zip
It does 5 trial blends, up to 6 aggregates, all size designs 12,5mm, 9.5mm etc., graphs 1-5 trial blends on 0.45
power chart with restricted zones and control points, densification tables and graphs, 5 batching sheets,
volumterics, and more. It is still evolving. If you find an error in it or have any better ideas then please email me.
At http://www.telepath.com/khobson/odot/liqlab/liqlab.html I have some more superpave items like the graphing
and calculation for mixing and compaction temperatures based on two rotational viscosity results.
I hope you get some benefit from my contributions. :-)
------------------------------------------------------------------------------------------
Work email:
Home email:
Home Page: http://www.telepath.com/khobson
Wpwin Tips: http://www.telepath.com/khobson/listserv.html
Work Phone: 405-521-2677
Work Fax 405-522-0552
------------------------------------------------------------------------------------------
Date: Tue, 26 Aug 1997 21:19:21 -0600
From: Delmar Salomon <>
To:
Subject: Re: Construction Advice
Gerald Huber wrote:
>
> Your question is open enough that it is difficult to answer. In many ways
> Superpave will be like other hot mix but depending on the experience you
> have with current Marshall mixes you may need to do some things differently.
> Plant operations and trucking should be no different. Superpave mixes seem
> to be more resistant to segregation which is good news.
>
> The mix should lay pretty much the same. The rollers need to be right tight
> to the paver. No hanging back waiting for the mix to cool. You may not
> have any problems with compaction. If you do it will either be that the mix
> is tender or that density will be hard to get.
>
> Tender has shown up in some mixes. It appears during the middle of
> compaction when temperatures are 250 to 225 F. If the tenderness is not too
> severe the best solution is to hold off rolling during the tender
> temperature range. If it is severe call back.
>
> Density can be hard to achieve if lift thicknesses are too thin. Florida
> has found that mixes were permeable when laid at the same thickness as the
> old Marshall mixes. Moving to 4 time nominal maximum size greatly eases
> compaction.
>
> I think that should be the main things to look out for. As I said, write
> back if something comes up.
>
> Gerry Huber
> Heritage Research Group
> 317 390 3141 tel
> 317 486 5095 fax
> ----------
> From:
> To: Gerald Huber; superpave
> Subject: Construction Advice
> Date: Wednesday, January 01, 1997 12:19PM
>
> From:
> Date: Fri, Aug 22, 1997 12:19 PM
> Subject: Construction Advice
> To: Gerald Huber; superpave
> I serve as a Project Engineer for the Mississippi DOT and am about to start
> an overlay which will be the first SUPERPAVE project that my office has
> been associated with. What advice can anyone give me that I could use as
> Project Engineer and that would be helpful to the personnel from my office
> who will be on the road. An help will be appreciated.
>
> William O'Reilly
>
> Work email:
> Home email:
>
> From: "William O'Reilly" <>
> To: <>
> Subject: Construction Advice
>
> ----------
Would these guidelines hold also for polymer modified asphalts(PMA)? Are
mixing and compaction the same as for unmodified AC's despite the
non-newtonian properties of the PMA's?
Thanks for your comments.
Delmar Salomon
Idaho Asphalt Supply, Inc.
Date: Wed, 27 Aug 1997 09:03:06 -0400
From: Chris Blades <>
To:
Subject: Re: Construction Advice
William O'Reilly wrote:
>
> I serve as a Project Engineer for the Mississippi DOT and am about to start
> an overlay which will be the first SUPERPAVE project that my office has
> been associated with. What advice can anyone give me that I could use as
> Project Engineer and that would be helpful to the personnel from my office
> who will be on the road. An help will be appreciated.
>
> William O'Reilly
>
> Work email:
> Home email:
I have completed a few Superpave projects in NY as bothe a producer and
a contractor. They have been low to med. ESAL projects (<10 mil).
Compaction is more difficult to achieve than our standard Marshall Mixes
but with enough effort and care can be done. We found that a heavy
breakdown roller (16 ton double drum vib.) achieved most of the desired
density after its pass. We could achieve density after the second roller
but in order to keep the paving train consistantly moving we needed
three rollers. The last roller took out roller creases and brought up
any areas that needed additional density. (Monitoring by Nuc Gauge)
The mix can tend to shove and move quite a bit at times. This usually
does not occur with the first roller but can show up with the second. It
can move 3 to 4 inches. (I have some slides where I painted lines on the
mat to show how much it moves) This probably happens at a certain temp.
range but we did not keep track of it. (next Job!)
We used a pneumatic roller as the intermediate roller and this seemed
to put the material in place with out shoving it. The density tests
however showed no difference in the final densities.
If you have more specific questions let me know.
Christopher Blades
A. L. Blades and Sons
7610 Co. Rt. 65
Hornell NY 14843
607-324-3636
607-324-0998 FAX
Date: Fri, 29 Aug 1997 14:24:00 -0500
From:
To:
Cc:
Subject: RE: Superpave Construction Advice
Concerning advice for the upcoming Superpave in Mississippi, I gathered
the following information for Michael Prather, Koch Materials Company,
Terre Haute, IN.
"Performance Graded asphalt binders may or may not be equivalent to
viscosity graded asphalts. Where there is not a great difference
between the high and low PG temperatures, straight-run asphalts meet the
specifications, and will exhibit the same behavior as their equivalent
viscosity and penetration graded asphalts."
"Some Indiana Superpave mixtures (a modified Superpave PG asphalt cement
in a mixture designed using the Superpave Gyratory Compactor, SGC) have
a 0.2% higher asphalt content than a conventional mixture (viscosity
graded asphalt in a Marshall design). There are several reasons for the
higher asphalt content. The rheology of the modified asphalt allows a
thicker film of binder on the aggregate surface, therefore requiring
more asphalt. The kneading action of the gyratory compactor also
orients the aggregates within the specimen differently than the Marshall
hammer."
"Using conventional guidelines for mix and compaction temperatures based
upon laboratory viscosity measurements generally results in
recommendations that are well above optimum temperatures for field
construction when using elastomer-modified asphalts."
Best of luck on your first Superpave project. I'm sure that you and
the driving public will enjoy the finished product.
-----------------------------------------
Phil Blankenship
Koch Materials Company
PO Box 1875
Wichita, KS 67201
Voice (316) 828-8495
Fax (316) 828-7385
-----------------------------------------
----------
William O'Reilly wrote:
>
> I serve as a Project Engineer for the Mississippi DOT and am about to
start
> an overlay which will be the first SUPERPAVE project that my office
has
> been associated with. What advice can anyone give me that I could use
as
> Project Engineer and that would be helpful to the personnel from my
office
> who will be on the road. An help will be appreciated.
>
> William O'Reilly
Date: Sun, 31 Aug 1997 19:56:05 -0500
From: MARSHA RAY <>
To:
Subject: RE: Superpave Construction Advice
At 02:24 PM 8/29/97 -0500, you wrote:
>Concerning advice for the upcoming Superpave in Mississippi, I gathered
>the following information for Michael Prather, Koch Materials Company,
>Terre Haute, IN.
>
>"Performance Graded asphalt binders may or may not be equivalent to
>viscosity graded asphalts. Where there is not a great difference
>between the high and low PG temperatures, straight-run asphalts meet the
>specifications, and will exhibit the same behavior as their equivalent
>viscosity and penetration graded asphalts."
>
>"Some Indiana Superpave mixtures (a modified Superpave PG asphalt cement
>in a mixture designed using the Superpave Gyratory Compactor, SGC) have
>a 0.2% higher asphalt content than a conventional mixture (viscosity
>graded asphalt in a Marshall design). There are several reasons for the
>higher asphalt content. The rheology of the modified asphalt allows a
>thicker film of binder on the aggregate surface, therefore requiring
>more asphalt. The kneading action of the gyratory compactor also
>orients the aggregates within the specimen differently than the Marshall
>hammer."
>
>"Using conventional guidelines for mix and compaction temperatures based
>upon laboratory viscosity measurements generally results in
>recommendations that are well above optimum temperatures for field
>construction when using elastomer-modified asphalts."
>
>Best of luck on your first Superpave project. I'm sure that you and
>the driving public will enjoy the finished product.
> -----------------------------------------
>Phil Blankenship
>Koch Materials Company
>PO Box 1875
>Wichita, KS 67201
>Voice (316) 828-8495
>Fax (316) 828-7385
>
> -----------------------------------------
> ----------
>William O'Reilly wrote:
>>
>> I serve as a Project Engineer for the Mississippi DOT and am about to
>start
>> an overlay which will be the first SUPERPAVE project that my office
>has
>> been associated with. What advice can anyone give me that I could use
>as
>> Project Engineer and that would be helpful to the personnel from my
>office
>> who will be on the road. An help will be appreciated.
>>
>> William O'Reilly
>
>Please don't send us any more mail. You have an incorrect address. Thanks
Date: Sun, 31 Aug 1997 20:01:58 -0500
From: MARSHA RAY <>
To:
Subject: RE: Superpave Construction Advice
At 02:24 PM 8/29/97 -0500, you wrote:
>Concerning advice for the upcoming Superpave in Mississippi, I gathered
>the following information for Michael Prather, Koch Materials Company,
>Terre Haute, IN.
>
>"Performance Graded asphalt binders may or may not be equivalent to
>viscosity graded asphalts. Where there is not a great difference
>between the high and low PG temperatures, straight-run asphalts meet the
>specifications, and will exhibit the same behavior as their equivalent
>viscosity and penetration graded asphalts."
>
>"Some Indiana Superpave mixtures (a modified Superpave PG asphalt cement
>in a mixture designed using the Superpave Gyratory Compactor, SGC) have
>a 0.2% higher asphalt content than a conventional mixture (viscosity