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Title:

Fractal Assessment of the Level of Alligator Cracking in Pavements

Accession Number:

01337573

Record Type:

Component

Abstract:

Pavement management systems require systematic monitoring of pavement surfaces to determine preventive and corrective maintenance. The process involves the accumulation of large amounts of visual data, typically obtained from site visitation. The pavement surface condition is then correlated to a pavement distress index that is based on a scoring system previously established by state or federal agencies. The scoring system determines if the pavement section requires maintenance, overlay or reconstruction. One of the surface distresses forming part of the overall pavement distress index is the alligator crack index. The alligator crack distress index involves the visual evaluation of the crack severity of a section of a pavement as being low, medium, or high. This evaluation is then integrated into a formula in order to obtain the alligator crack index. In this study a quantification of the visual evaluation of the severity of alligator cracking is carried out using photographs and the fractal dimension concept from fractal theory. Pavements with low levels of cracking were found to have a fractal dimension equal to 1.051. Pavements with moderate levels of cracking had a fractal dimension equal to 1.1754. Pavements with high degrees of cracking had a fractal dimension that varied between 1.5037 (high) and 1.7111 (very high). Pavements with a level of cracking equal to 1.8976 represented pavements that disintegrated and developed potholes. Thus, the visual evaluation of the state of cracking of a pavement could be enhanced with the use of the fractal dimension concept from fractal theory.

Supplemental Notes:

The DVD lists the title of this paper as: Fractal Assessment of Level of Alligator Cracking in Pavements.

Monograph Accession #:

01329018

Report/Paper Numbers:

11-0816

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Vallejo, Luis Eduardo

Pagination:

12p

Publication Date:

2011

Conference:

Transportation Research Board 90th Annual Meeting

Location: Washington DC, United States
Date: 2011-1-23 to 2011-1-27
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures; Photos; References (13) ; Tables (2)

Uncontrolled Terms:

Fractal analysis

Subject Areas:

Highways; Maintenance and Preservation; Pavements; I61: Equipment and Maintenance Methods

Source Data:

Transportation Research Board Annual Meeting 2011 Paper #11-0816

Files:

TRIS, TRB

Created Date:

Feb 17 2011 5:35PM