01474854

Component

https://doi.org/10.3141/2366-03

http://scholar.google.com...eifi&publication_year=2013

The Louisiana Department of Transportation and Development (DOTD) conducted a research project with the rolling wheel deflectometer (RWD) on approximately 1,400 mi of asphalt concrete roadways. The major outcomes of the study were evaluation of the effectiveness of the RWD as a structural assessment tool on Louisiana highways and the introduction of the RWD index (RI). The purpose of this study was to define RI ranges for treatment selections or pavement structural conditions linked to current methods of the Louisiana DOTD’s pavement management system; multivariate (factor analysis) and descriptive [analysis of variance (ANOVA)] statistical methods and fuzzy logic functions were used. The factor analysis revealed that the RI could be used as a single index for assessing pavement structural conditions. ANOVA revealed that the RI could not be used to establish the four treatment methods typically used by the Louisiana DOTD but that it could be used to infer whether a pavement was structurally sound or deficient. If the pavement were determined to be structurally deficient, additional structural evaluation, such as with a falling weight deflectometer, would be required. Fuzzy logic and set theory were used to establish fuzzy functions for structurally sound and structurally deficient pavement conditions along with RI threshold ranges per thickness group. Equations were derived to produce RI threshold values for pavement thicknesses less than 12 in. The equations may be used for pavements thicker than 12 in., but with caution. For large segments of roadways, algorithms were used to assess whether pavements were structurally sound or structurally deficient on the basis of RI.

01497499

13-0544

English

pp 25-33

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309286855

Print

Figures (4) ; References (37) ; Tables (7)

Deflection; Deflectometers; Factor analysis; Fuzzy algorithms; Fuzzy logic; Multivariate analysis; Pavement management systems; Pavement performance

Louisiana Department of Transportation and Development

Data and Information Technology; Environment; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I71: Traffic Theory

TRIS, TRB, ATRI

Feb 5 2013 12:14PM

• Bayesian Approach to Updating Markov-Based Models for Predicting Pavement Performance
• Enhancing Network-Level Decision Making Through the Use of a Structural Capacity Index
• Evaluating Pavement Condition of the National Highway System
• Evaluation of the Effectiveness of Mississippi’s Pavement Warranty Program
• Findings from the International Scan on Managing Pavements and Monitoring Performance
• Impact of Error in Pavement Condition Data on the Output of Network-Level Pavement Management Systems
• Improved Method for Evaluating the Pavement Structural Number with Falling Weight Deflectometer Deflections
• Innovative Sprinkle Treatment for Thin Durable Asphalt Overlays
• Management of Pavement Maintenance, Rehabilitation, and Reconstruction Through Network Partition
• Pavement Condition States Before and After Treatment
• Probabilistic Characterization of Uncertain Inputs in the Life-Cycle Cost Analysis of Pavements
• Project Emission Estimator: Tool for Contractors and Agencies for Assessing Greenhouse Gas Emissions of Highway Construction Projects
• Toward Sustainable Pavement Management: Incorporating Environmental Impacts of Pavement Treatments into a Performance-Based Optimization