project tx 0-5566
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Project TX 0-5566. District Questionnaire (October 16 2008). Strategies to Improve and Preserve Flexible Pavement at Intersections. UTEP - Soheil Nazarian Imad Abdallah. Do your pavements experience distress at the intersections of low volume roads?. - PowerPoint PPT PresentationTRANSCRIPT
Project TX 0-5566
Strategies to Improve and Preserve Flexible Pavement
at Intersections
UTEP
- Soheil Nazarian- Imad Abdallah
1
District Questionnaire
(October 16 2008)
Beaumont
Odessa
Lubbock
Amarillo
Childress
Abilene
San Angelo
Laredo
San Antonio
Austin
Pharr
Corpus Christi
Wichita Falls
Brownwood
Fort Worth
Waco
Dallas
Paris
Atlanta
Tyler
Bryan
Lufkin
El Paso
Houston
Yoakum
Texas’ Districts MapShowing Districts with Answer
Districts with high distresses at intersections
Districts with minor distresses at intersections
Do your pavements experience distress at the intersections of low volume roads?
3
Do your pavements experience distress at the intersections of low volume roads?
12
1
12
0
2
4
6
8
10
12
14
Distress No Distress No Response
Nu
mb
er o
f Dis
tric
ts
Do your pavements experience any type of distress at the intersections of low volume roads?
0% 20% 40% 60% 80% 100%
Abilene
Brownwood
Ft. Worth1
Ft. Worth3
Lubbock1
Lubbock3
Odessa
Pharr
Tyler*
Percent of Intersections
Dis
tric
ts
What the severity level at the intersections of low volume roads?
0% 25% 50% 75% 100%
AbileneAtlanta
BrownwoodBryan
Ft. Worth1Ft. Worth2Ft. Worth3
HoustonLubbock1Lubbock2Lubbock3
LufkinOdessa
ParisPharr
San Antonio
Percent of Intersections
Dis
tric
ts
High Severity Medium Severity Low Severity
What distress types are common at your intersections on low volume roads?
81%
75%
81%
75%
44%
0% 25% 50% 75% 100%
Rutting
Shoving
Cracking
Pushing
Other
Percent of Responses(16 Responses from 12 Districts)
Com
mon
Dis
tres
s at
In
ters
ecti
ons
Other:-Loss of aggregate-Pot holes-Rolling of seal coat-Rub boad effect- Edge break off
If rutting is an issue at intersections, please select probable causes: (check all that apply)
63%
31%
56%
44%
13%
25%
19%
6%
19%
0%
75%
69%
44%
63%
25%
31%
38%
38%
38%
13%
25%
6%
6%
6%
6%
25%
25%
44%
31%
6%
19%
25%
19%
19%
6%
0% 25% 50% 75% 100%
Rutting
Shoving
Cracking
Pushing
Other
Percent of Responses(16 Responses from 12 Districts)
Com
mon
Dis
tres
s at
In
ters
ecti
ons
Other Causes*
Subgrade Type
Inadequate Drainage
Environmental Condition
Traffic
Construction Quality
Inadequate Structures
*Other Causes: - Rutting : Hot mix, Utilities,- Shoving : Too much asphalt, Width of roadway and un-uniform subgrade (loam and sand not mixed properly),- Cracking: Age of roadway,- Pushing : Lack of vegatation on edge of pav., removal of 6-12 in. of pav. struc. on edge of roadway, and roadway elevation,- Other: Edge break off /Pot holes-Age of roadway, snow removal
Current solutions you typically use to remedy rutting:
50%
25%
25%
31%
6%
0%
0%
0%
0%
0%
6%
6%
63%
0%
0%
63%
63%
19%
56%
0%
31%
31%
13%
25%
13%
25%
44%
25%
31%
6%
31%
19%
50%
38%
6%
0% 25% 50% 75% 100%
Rutting
Shoving
Cracking
Pushing
Other
Percent of Responses(16 Responses from 12 Districts)
Com
mon
Dis
tres
s at I
nter
sect
ions
Other Strategies*
Full Depth ReclamationReconstruction
Rehabilitation
Preservation
Concrete Overlay
Hot Mix Blade Overlay
Other Stratigies*- Rutting : Rut fill & seal, spot base repair, blade level-up with maintainer, shaving cold mix overlay- Shoving : Spot base repair, mill & blade level-up with maintainer, shaving and cold mix overlay- Cracking : Crack seal, spot base repair, spot seal, crack pouring, fog seal, overlay, seal coat, scrub seal- Pushing : Spot base repair, mill & blade level-up with maintainer, widing, shaving and cold mix overlay, good edge vegitation- Other: Edge break off: Fog seal, chip seal, good edge vegitation, blade edge with no vegitation
Pot holes: Hand patch-cold mix , seal coat
10
0% 10% 20% 30% 40% 50%
Hot Mix Blade Ovelay
Concrete Overlay
Preservation
Rehabilitation
Reconstruction
Full Depth Reclamation
Rut Fill & Seal*
Spot Base Repair*
Blade Level-Up*
Shaving and Cold Mix*
Mill then Overlay*
c
Rem
edia
tion
Str
ateg
ies
3-10 Years 1-3 Years
*- Other RemediationStrategies Specified
Typical Performance Period for Selected Remediation Strategies (Rutting)
11
Typical Performance Period for Selected Remediation Strategies (Cracking)
0% 10% 20% 30% 40%
Hot Mix Blade Ovelay
Concrete Overlay
Preservation
Rehabilitation
Reconstruction
Full Depth Reclamation
Spot Seal*
Crack Seal*
Spot Base Repair*
Fog Seal*
Cold Mix Overlay & Seal Coat*
Scrub Seal*
Percent of Responses
Rem
edia
tion
Str
ateg
ies
3-10 Years 1-3 Years
*- Other RemediationStrategies Specified
12
Typical Performance Period for Selected Remediation Strategies (Pushing)
0% 10% 20% 30% 40% 50%
Hot Mix Blade Ovelay
Concrete Overlay
Preservation
Rehabilitation
Reconstruction
Full Depth Reclamation
Spot Base Repair*
Good Edge Vegetation*
Mill & Overlay*
Shaving and Cold Mix*
Percent of Responses
Rem
edia
tion
Str
ateg
ies
3-10 Years 1-3 Years
*- Other RemediationStrategies Specified
13
Typical Performance Period for Selected Remediation Strategies (Shoving)
0% 10% 20% 30% 40% 50%
Hot Mix Blade Ovelay
Concrete Overlay
Preservation
Rehabilitation
Reconstruction
Full Depth Reclamation
Spot Base Repair*
Mill & Blade Level-Up*
Shaving and Cold Mix*
Number of Responses
Rem
edia
tion
Str
ateg
ies
3-10 Years 1-3 Years
*- Other RemediationStrategies Specified
Project TX 0-5566
Strategies to Improve and Preserve Flexible Pavement
at Intersections
UTEP
- Soheil Nazarian- Imad Abdallah
14
District Questionnaire 2
(April 2009)
Thank you
24