NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...
Transcript of NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...
![Page 1: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/1.jpg)
L. Michael10/30/02
“A YEAR WITH…”
![Page 2: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/2.jpg)
Approved Gyratory CompactorsApproved Gyratory Compactors
Pine AFGC125X
Troxler 4140 Troxler 4141
Pine AFG1 Brovold
Interlaken
Rainhart
IPC ServoPac
![Page 3: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/3.jpg)
Are they allthe same?
2001
![Page 4: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/4.jpg)
Are they allthe same?
2002
NO!!!
![Page 5: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/5.jpg)
Maryland SHAMaryland SHARound RobinRound Robin
SGC Set to 1.25 degrees Externally12.5mm Mixture / 6 Replicates
2.4902.5002.5102.5202.5302.5402.5502.5602.5702.5802.5902.600
0 5 10 15 20 25 30 35 40 45 50
Compactor ID
Indi
vidu
al B
ulk
Spe
cific
Gra
vitie
s,
Gm
b
![Page 6: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/6.jpg)
Maryland SHAMaryland SHARound RobinRound Robin
0
2
4
6
8
10
12
His
togr
am
2.51 2.52 2.53 2.54 2.55 2.56 2.57 2.58
Average Bulk Specific Gravity, Gmb
SGC Set to 1.25 degrees Externally12.5mm Mixture / 6 Replicates
![Page 7: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/7.jpg)
Maryland SHAMaryland SHARound RobinRound Robin
2.525
2.530
2.535
2.540
2.545
2.550
2.555
2.560
2.565
Ave
rage
Bul
k S
peci
fic G
ravi
ty,
Gm
b
B (2) IL (1) G1 (3) 125 (14) S-Pac(1)
4140(22)
4141 (2)
SGC Model (Number of Units)
SGC Set to 1.25 degrees Externally12.5mm Mixture / 6 Replicates
![Page 8: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/8.jpg)
Maryland SHAMaryland SHARound RobinRound Robin
2.00
2.50
3.00
3.50
4.00
Air
Voi
ds, V
a
B (2) IL (1) G1 (3) 125 (14) S-Pac (1) 4140 (22) 4141 (2)
SGC Model (Number of Units)
SGC Set to 1.25 degrees Externally12.5mm Mixture / 6 Replicates
![Page 9: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/9.jpg)
Maine DOTMaine DOT
Since going to internal angle set by DAVSince going to internal angle set by DAV
In 2002In 2002?? Out of over 2000 bulk splits (DOT/Contractor)Out of over 2000 bulk splits (DOT/Contractor)?? 1.5% dispute rate1.5% dispute rate?? 0.5% overturned0.5% overturned
![Page 10: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/10.jpg)
Maryland SHAMaryland SHARound Robin Round Robin -- OriginalOriginal
0
2
4
6
8
10
12
His
togr
am
2.51 2.52 2.53 2.54 2.55 2.56 2.57 2.58
Average Bulk Specific Gravity, Gmb
SGC Set to 1.25 degrees Externally12.5mm Mixture / 6 Replicates
![Page 11: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/11.jpg)
Maryland SHAMaryland SHARound Robin Round Robin -- DAVDAV
0
1
2
3
4
5
His
togr
am
2.38 2.39 2.40 2.41 2.42 2.43 2.44 2.45
Average Bulk Specific Gravity, Gmb
SGC Set to 1.16+0.02 degrees using DAV12.5mm Mixture / 6 Replicates
![Page 12: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/12.jpg)
Gyratory CompactorGyratory Compactor?? Bearings Bearings -- excessive wearexcessive wear?? Brake Brake -- not functioning properly; not functioning properly;
does not maintain the same does not maintain the same starting pointstarting point
?? Ram head Ram head -- excessive wearexcessive wear?? Column Column -- lack of greaselack of grease?? Machine Machine -- not maintained; stops not maintained; stops
during compaction; worn parts during compaction; worn parts need replacedneed replaced
LESSONS LEARNED WITH DAVLESSONS LEARNED WITH DAV
![Page 13: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/13.jpg)
LESSONS LEARNED WITH DAVLESSONS LEARNED WITH DAV
MoldsMolds?? Out of roundOut of round?? Excessive wearExcessive wear?? Lack of maintenanceLack of maintenance
![Page 14: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/14.jpg)
MixMix?? Different mix sizes change internal angleDifferent mix sizes change internal angle
Some compactors do not compare; Some compactors do not compare; reason is unknown reason is unknown
LESSONS LEARNED WITH DAVLESSONS LEARNED WITH DAV
![Page 15: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/15.jpg)
Refinement of AASHTO T 312Refinement of AASHTO T 312--0101
![Page 16: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/16.jpg)
Additional IssuesAdditional Issues
Implementation Issues:Implementation Issues:?? Cost(s)Cost(s)?? MaintenanceMaintenance?? SpecificationsSpecifications
Mixture stiffness versus internal angleMixture stiffness versus internal angleMold WearMold WearRoundRound--robin (interrobin (inter--laboratory) studylaboratory) study
![Page 17: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/17.jpg)
Now What ?
2003
![Page 18: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/18.jpg)
Gyratory Compactor Gyratory Compactor ?? Must be serviced and Internal Angle setMust be serviced and Internal Angle set?? at 1.16at 1.16
Molds must be checked for:Molds must be checked for:?? Out of roundOut of round?? Excessive wearExcessive wear
2003 IN MARYLAND2003 IN MARYLAND
![Page 19: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only]...Title: NEUPG-DAV.ppt2 Larry Michael.ppt [Read-Only] Author: ekh Created Date: 12/17/2002 9:03:26 AM](https://reader034.fdocuments.us/reader034/viewer/2022051908/5ffc5f33f6f46279c220632d/html5/thumbnails/19.jpg)
Questions...