CCSA Conference February 9-10, 2012

Peter Vacura

Office of Asphalt Pavements Co-Chair of PPTG

  PMS Status   Programming Elements   HM Programming   Triggers   Decision Trees   Strategy Selection App   Next Step   Summary

  Currently working on Configuration   Identifying Data Sources   Test in March/April 2012   Go live in May 2012

  Rehabilitation/Reconstruction - SHOPP   CAPM - SHOPP   Corrective Major Maintenance - HM-1   Preservation/Preventive - HM-1   State Forces - Maintenance Funding

  3 Categories ◦  Corrective ◦  Preventive ◦  Base

  Developed Annually   Part of 5 Year Maintenance Plan

  Preservation Projects are programmed under 2 scenarios ◦  Placed 3-5 years after most recent Rehabilitation or

CAPM ◦  Placed based on first signs of distress or wear.

  Triggers could be light cracking, raveling, aging, ride, flushing.

Pavement Performance Curves

Years

Pave

men

t Con

ditio

n In

dex,

PC

I

0

75

25

50

100

0 30 20 10

1 X / mile

55 X / mile

13 X / mile

2 X / mile

0.5 X / mile

  Categorize strategies by type ◦  Seals ◦  Thin lifts ◦  Friction courses

  Determine distresses connected with the strategy type

  Quantify distresses and catch pavement prior to exceeding the levels established

  Assign strategy to those distress types and levels that it’s meant to address

Flexible Pavement Treatment Assignment Path Version 7.0

Date: 1/17/12Created by: Chun/John

Initiation: Cracking Extent Inputs: IRI Data, Rut Deph Data, MPD Data, Pavement Condition Survey, Traffic Data

Output: Treatment or Do Nothing Option

Footnotes:

Lane Replace or Thick OL

[2]

Full Depth Reclamation [1]

Thin OL[5]

Wheelpath Cracking Value?

Med OL[4]

>30

AADT >30k?

NO

YES

<=30 and >10

<=10 and >5

<=5

Thin OL[5]

FlexTCI?

<=50

Average Rut?

Thin OL[5]

AADT >30k?

Very Thin OL[3]

Seal Coat[6]

Average Rut?

Thin OL[5]

MPD Index?

Seal Coat[6]

Very Thin Overlay [3]

>50 and

<=90

>90

>=½ in.

<½ in.

YES

NO

>=2000 micron

>=½ in.

<½ in.

<2000 micron

Average IRI ?

>=170 in./mile

<170 in./mile

Seal Cracks [8]

Rulesto be implemented manually1. If one lane triggered for OL then all adjacent lanes triggered for OL.2. If either Transverse, Longitudinal or XF classified as Wide or Wheelpath cracking as Unsealed then Yes, otherwise No.

Trans/Long/XF Crack Condition?

See Rule 2Do Nothing

Yes

No

Treatments:1. Full Depth Reclamation2. Thick Overlay or Reconstruct3. Very Thin Overlay4. Medium Overlay5. Thin Overlay6. Seal Coat7. Cold In-Place Recycling8. Seal Cracks

AADT>30k?

YES

NO

Cold In-Place Recycling [7]

  PMS will allow for us to input preservation strategies

  Requires the following: ◦  Strategy service life ◦  Distress thresholds

  Accuracy and Reliability will depend on performance data ◦  Automated Pavement Condition Survey annual data

collection ◦  Development of and improvement to Performance

Curves

  Strategy Selection system is the initial framework for choosing preservation treatments

  Further enhancements required through models and data collection

  Provide for multiple preservation treatments

  Preservation is an integral part of PMS   Strategies selected based on condition   Thresholds established for optimal placement   Improved performance curves will help to

place right strategy at the right time