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Performance assessment of Wisconsin's whitetopping and ultra thin whitetopping projects.

Published Date:

2010-03-01

Language:

English

[PDF-6.74 MB]

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Performance assessment of Wisconsin's whitetopping and ultra thin whitetopping projects.

Details:

Alternative Title:

Performance assessment of Wisconsin's whitetopping and ultra-thin whitetopping projects

Creators:

Wen, Haifang ; Li, Xiaojun ; Martono, Wilfung ;

Corporate Creators:

Washington State University

Corporate Contributors:

Wisconsin. Dept. of Transportation. Research Coordination Section ; Wisconsin Highway Research Program ;

Subject/TRT Terms:

Overlays (Pavements) ; Pavement maintenance ; Evaluation and assessment ; Performance measurement ;

Publication/ Report Number:

43011

Resource Type:

Tech Report

Geographical Coverage:

Wisconsin

OCLC Number:

647794864

Edition:

Final report; Oct. 2007-Mar. 2010.

Corporate Publisher:

Wisconsin Highway Research Program

NTL Classification:

NTL-HIGHWAY/ROAD TRANSPORTATION-Materials ; NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance ; NTL-HIGHWAY/ROAD TRANSPORTATION-Construction and Maintenance ;

Abstract:

Whitetopping overlay is a concrete overlay on the prepared existing hot mix asphalt (HMA) pavement to

improve both the structural and functional capability. It’s a relatively new rehabilitation technology for

deteriorated HMA. If the slab thickness is less or equal to 4 in., it is referred to as ultra-thin whitetopping (UTW).

“WT” is used to refer to concrete overlay thicker than 4 in. In this research, the term “whitetopping” is used to

refer to both WT and UTW in general.

The primary objectives of this study are to catalog the whitetopping (WT) and UTW projects in

Wisconsin, document pertinent design and construction elements, assess performance and estimate a service

life of these projects. A comprehensive literature review was performed. A database of the WT and UTW

projects was established covering 18 projects built from 1995 to 2007 in Wisconsin.

The performance of these WT and UWT projects were assessed, by mean of shear strength tests on

field cores, falling weight deflectometer (FWD) tests on selected projects, and field distress survey on in-service

projects. FWD backcalculation methods for WT and UTW pavements were studied and a Critical Distance

Method was proposed and utilized for UTW pavement. Fatigue life was analyzed using 18kip, 22kip and 26kip

single axle load level. Performance assessment was conducted using both Pavement Condition Index (PCI) and

Pavement Distress Index (PDI). The performance of whitetopping projects in Wisconsin was found comparable

to that in other states. Whitetopping overlay thickness, joint spacing and pavement age were found to have

significant effects on pavement performance.

Format:

PDF

Funding:

WHRP Project 0092-08-10

Collection(s):

US Transportation Collection

Main Document Checksum:

[+]

Supporting Files:

No Additional Files

No Related Documents.

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U.S. Department of Transportation

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