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FHWA > Asset Management > HIF-10-020 > Appendix C - Treatment Data

Performance Evaluation of Various Rehabilitation and Preservation Treatments

Appendix C - Treatment Data

The performance data collection was performed through an examination of current State practices and performance results in six "target" States. While every attempt has been made to evaluate each treatment in at least three projects per State and at least three States out of six target States, the data was supplemented with information from the literature or through data obtained from the SHRP Maintenance Effectiveness Studies whenever limited data was available from the target States.

The tables in this Appendix detail data related to the 20 types of treatments. They include the following types of information:

  1. Project location information
  2. Climatic zone for each project under review
  3. Timing of application
  4. Annual average daily traffic and % truck on the pavement section associated with the selected treatment
  5. Distress types and values used to trigger the selected treatments
  6. Pavement Condition Rating before and after treatment has been applied
  7. Extended pavement service life or structural life associated which the selected treatments
  8. Method used to determine the pavement life extension
  9. Cost/lane mile associated with the selected treatment (normalized to 2009 dollars using a 4% discount rate)
  10. Source of information for task 3a thru task 3g
  11. Experience of the contractor and DOT field personnel with this treatment
  12. Year of project (this will help put the project cost into perspective)

In order to obtain consistent responses from State DOTs that vary significantly in pavement preservation and renewal practices, the agencies were asked to complete the pre-formatted Maintenance and Rehabilitation Treatments Worksheet with data items provided with specific definitions to facilitate data entry, as shown in the following.

Data Items and Definitions
Column Name Definition
Pavement Treatment Type Treatments highlighted are known to have been actively used in your State and hence are requested. For other treatments, if relevant information is readily available, input those as well.
Route Number List according to the definition in your State
Project Length Miles If begin and end milepost are available, list as MPXXX~XXX; Otherwise directly list the length
Climatic Zone Follow the definitions from the FHWA LTPP program, namely, Dry-Freeze (DF), Wet-Freeze (WF), Dry-No freeze (DNF), and Wet-No freeze (WNF).
Treatment Year List the year, month would be preferred, if available
Last Rehab Year The year when it was last rehabilitated, prior to this treatment being performed
AADT/% Trucks Preferably the traffic data at the treatment year. If traffic data is from other years, list the corresponding year (for example, 3260(1996)). If AADT not available, use qualitative description (e.g. high traffic, low traffic), if applicable.
Distress Types and Values Used to Trigger Treatments Textual description of reason for treatment. If specific values of distresses are not available, use qualitative description if applicable. Sometimes the treatment selections are based on research/business needs and project/funding availability, in this case, please specify.
PCR Prior Pavement Condition Rating before treatment has been applied. Use performance index value(s) if available, otherwise use qualitative description.
Date of Survey List the year for PCR prior to treatment, month would be preferred if available
PCR After Pavement Condition Rating after treatment has been applied. Use performance index value(s) if available, otherwise use qualitative description.
Date of Survey List the year for PCR after treatment, month would be preferred, if available
Extended Service Life Extension of service life in terms of years of service associated with the treatment (service prior to next treatment - either maintenance or rehabilitation). If not available, use descriptive text regarding the performance improvement or estimate based on similarities observed on other projects
Method Used to Determine Pavement Life Extension If no specific method is available, please specify whether it is visual observation/engineering judgment based, or no such pavement life extension definition exists in your State.
Cost/Lane mile, $ Data is preferred on a lane-mile basis for pavement related costs only. For cost data that are in quantities, miles, or area based, if unable to be converted to $/lane-mile, list the original cost data as it is.
Data Sources Based on the source of the majority information. Use five primary types of sources: PMS (Pavement Management System), MMS (Maintenance Management System), RP (Research Project), Flat File, or other (please explain if other).
Experience with Treatment Experience of the contractor and DOT field personnel with this treatment (high, medium, or low). A high experience level is used for treatments that are consistently and routinely used in your State. A medium level of experience is used for treatments that are sometimes used in your State or treatments that have been used for five years or less, and low experience would be reserved for treatments not regularly used in your State or treatments in a pilot study mode. If available, list the approximate application history, i.e. how long the treatment has been used in your State.

The following tables are contained in this appendix.

Table C.1 HMA - overlay
Table C.2 HMA - chip seal
Table C.3 HMA - microsurfacing
Table C.4 HMA - crack sealing
Table C.5 HMA - mill and resurfacing
Table C.6 HMA - hot in-pave recycling
Table C.7 HMA - slurry seal
Table C.8 HMA - fog seal
Table C.9 HMA - cold in-place recycling
Table C.10 HMA - full-depth reclamation
Table C.11 HMA - structural overlay (mill and fill)
Table C.12 HMA - whitetopping
Table C.13 PCC - diamond grinding
Table C.14 PCC - dowel bar retrofit
Table C.15 PCC - full-depth repair
Table C.16 PCC - joint sealing
Table C.17 PCC - partial depth repair
Table C.18 PCC - HMA overlay without slab fracturing
Table C.19 PCC - crack and seat or rubblize with HMA overlay
Table C.20 PCC - unbonded overlay

View Tables

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Updated: 11/01/2012