Revised Condition Rating Survey Models to Reflect All Distresses: Volume 1

Ozer, Hasan; Ziyadi, Mojtaba; Feng, Yichen

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https://hdl.handle.net/2142/99626 Copy

Description

Title

Revised Condition Rating Survey Models to Reflect All Distresses: Volume 1

Author(s)

• Ozer, Hasan
• Ziyadi, Mojtaba
• Feng, Yichen

Issue Date

2018-04

Keyword(s)

• Pavement management
• pavement condition
• distress
• CRS

Abstract

Pavement condition assessment plays a key role in infrastructure programming and planning processes. Similar to other state agencies, the Illinois Department of Transportation (IDOT) has been using a system to evaluate the condition of pavements since 1974. Since 1994–1995, IDOT has been using a system to project future pavement performance as well. The condition rating survey (CRS) value is the index between 1 (failed) and 9 (new), representing the overall condition of pavement. The purpose of this study was to update and revise the existing CRS calculation and prediction models using new data. To accomplish the goals of the study, the CRS data was received for the years 2000–2014. The data was initially processed and cleaned in preparation for modeling. CRS prediction models were prepared for Interstate and Non-Interstate pavement types. The two-slope model was used for all asphalt-surfaced pavements, whereas a new model was proposed for concrete-surfaced pavements. The proposed model for concrete-surfaced pavements is a nonlinear survival type designed to capture the distinct deterioration patterns of concrete pavements with little to no reduction in CRS—followed by a rapid and linear deterioration and a flatter region at the end, once the pavement is saturated with damage. The CRS calculation models were updated to incorporate new distresses. Based on the literature review and the analysis of distress composition, it was found that IDOT’s distress ratings are generally in agreement with the ASTM standard—with the exception of alligator cracking. A database containing recorded distresses, used by experts, was referenced to add missing distresses, such as alligator cracking, for each Interstate model.

Publisher

Illinois Center for Transportation/Illinois Department of Transportation

Series/Report Name or Number

FHWA-ICT-18-002

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/99626

DOI

0197-9191

Sponsor(s)/Grant Number(s)

IDOT-R27-150

Copyright and License Information

No restrictions. This document is available through the National Technical Information Service, Springfield, VA 22161.

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