01005173

Component

https://doi.org/10.3141/1905-12

http://scholar.google.com...ikis&publication_year=2005

The reliability concept provides a means of incorporating some degree of certainty into the pavement design process to ensure that the outcomes of the process will provide acceptable levels of service until the end of the intended design life. Pavement structural performance and rehabilitation design are highly dependent on the in situ layer properties. Pavement layer thickness is an essential input in backcalculation analysis performed with measured surface deflections to evaluate the in situ structural capacity of a pavement. Inaccurate thickness information may lead to significant errors in the backcalculated layer moduli and, hence, in the rehabilitation design. Because pavement layer thickness has some degree of variability (normal variability), it is important to consider this variability in the backcalculation analysis and rehabilitation design. A procedure was developed to implement the reliability concept in backcalculation analysis to account for the normal variability in layer thickness within structurally homogeneous sections. This procedure was developed on the basis of in situ layer information obtained from a ground-penetrating radar study performed for the New Jersey Department of Transportation. This paper provides an overview of the procedure, along with the results of the pilot implementation of the procedure. This reliability procedure complements the reliability factor of the 1993 AASHTO pavement design guide, as the latter reliability factor does not account for the in situ layer thickness.

01005160

English

pp 97-106

2005

Transportation Research Record: Journal of the Transportation Research Board

0309093775

Print

Figures (10) ; References (5) ; Tables (4)

Backcalculation; Ground penetrating radar; Implementation; Modulus of elasticity; Pavement design; Pavement layers; Rehabilitation; Reliability; Thickness; Variables

Data and Information Technology; Design; Highways; Pavements; Research; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

Oct 3 2005 3:33PM

• Accelerated Pavement Rehabilitation and Reconstruction with Long-Life Asphalt Concrete on High-Traffic Urban Highways
• Application of Reliability Concept in Concrete Pavement Rehabilitation Decision Making
• Asphalt Pavement Rehabilitation Treatment: Analysis of 20 Years of Performance
• Assessment of Pavement Layer Condition with Use of Multiload-Level Falling Weight Deflectometer Deflections
• Falling Weight Deflectometer Correlation
• Fast Nondestructive Field Test Method to Determine Stiffness of Subsurface Layer in Thin Surface Hot-Mix Asphalt Pavement
• Full-Car Roughness Index as Summary Roughness Statistic
• History and Development of U.S. Procedures for Falling Weight Deflectometer Calibration
• Identifying Friction Variations with the Standard Smooth Tire for Network Pavement Inventory Friction Testing
• Implementation of Cold In-Place Recycling with Expanded Asphalt Technology in Canada
• Interpretation of Transverse Profiles to Determine the Source of Rutting Within an Asphalt Pavement System
• Methodology for Detection of Defect Locations in Pavement Profile
• Modeling Hydroplaning and Effects of Pavement Microtexture
• Monitoring Pavement Changes in a Rehabilitation Project with Continuous Rolling Dynamic Deflectometer Profiles
• Seed Modulus Generation Algorithm for Backcalculation of Flexible Pavement Moduli
• Simple Model for Pavement Damage
• Wisconsin Experiences with Reflective Crack Relief Projects