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Title:

EVALUATING POTENTIAL FOR REFLECTION CRACKING WITH ROLLING DYNAMIC DEFLECTOMETER

Accession Number:

00982135

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States
Order URL: http://www.trb.org/Main/Public/Blurbs/155236.aspx

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Order URL: http://worldcat.org/isbn/0309094631

Abstract:

A common rehabilitation strategy used for repairing aged concrete pavement is to place a hot-mix asphalt (HMA) overlay on the existing concrete pavement. However, reflection cracks are often found to propagate from the underlying cracks and joints through the HMA layer. As such, much reflection cracking is believed to be caused by differential vertical and horizontal movements in the concrete pavement. A common method of determining the differential vertical movements is by measuring the load transfer efficiency (LTE) at the joints by using nondestructive deflection testing devices. A study was conducted with a rolling dynamic deflectometer (RDD) to evaluate the movement of joints in concrete pavements. Evaluation of joint movements by RDD testing permits estimation of the LTE of each joint or transverse crack. On the basis of the assumption that reflection cracks are more likely to form at joints or cracks with low LTE than with high LTE, pavement engineers can use the results to identify areas with low LTE and perform necessary repairs at these locations to reduce the potential for creating reflection cracking. Field data collected before rehabilitation work on US-82 near Gainesville, Texas, are presented as a case study, and the benefits of continuous deflection profiling for use in the district's rehabilitation strategy are discussed.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1869, Pavement Rehabilitation, Strength and Deformation Characteristics, and Surface Properties 2004.

Monograph Accession #:

00982133

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Lee, JLY
Chen, D-H
Stokoe II, K H
Scullion, T

Pagination:

p. 16-24

Publication Date:

2004

Serial:

Transportation Research Record

Issue Number: 1869
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309094631

Features:

Figures (9) ; Photos (3) ; References (16)

Geographic Terms:

Gainesville (Texas)

Subject Areas:

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

Files:

TRIS, TRB, ATRI

Created Date:

Nov 10 2004 12:00AM

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