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Title:

SIMPLE APPROACH TO ESTIMATION OF PAVEMENT STRUCTURAL CAPACITY

Accession Number:

00763307

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309065240

Abstract:

The use of the falling weight deflectometer (FWD) as a tool for investigating the structural strength of flexible and rigid pavements is now common. The backcalculation of layer moduli is the primary technique for data interpretation. This technique is cumbersome and expensive to apply to low-volume roads. A simple way of relating the FWD surface deflections to the performance of pavement structures, expressed by the structural number (SN), is presented. The technique is proposed as an alternative to existing methods in Louisiana using Dynaflect data. The relationship was deduced by statistical analysis, using the data collected at the Louisiana Transportation Research Center Pavement Research Facility. The study found that the correlation between the SN and the FWD deflections is satisfactory. Two different relationships are recommended for flexible and semirigid pavements. Both relationships can be applied in a pavement management environment because they allow evaluation of the required thickness for the asphalt overlay. It was found that the structural layer coefficients must be assigned functions of the laboratory moduli determined by the indirect tensile test, not functions of the backcalculated moduli.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1652, Seventh International Conference on Low-Volume Roads, May 23-26, 1999, Baton Rouge, Louisiana, Volume 2.

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Romanoschi, S
Metcalf, J B

Pagination:

p. 198-205

Publication Date:

1999

Serial:

Transportation Research Record

Issue Number: 1652
Publisher: Transportation Research Board
ISSN: 0361-1981

Conference:

Seventh International Conference on Low-Volume Roads

Location: Baton Rouge, Louisiana
Date: 1999-5-23 to 1999-5-26
Sponsors: US Forest Service; Federal Highway Administration; US Bureau of Indian Affairs; Louisiana State University; World Road Association; Department of International Development-UK; Louisiana Transportation Research Center; Louisiana DOT

ISBN:

0309065240

Features:

Figures (4) ; References (25) ; Tables (4)

Subject Areas:

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

Files:

TRIS, TRB, ATRI

Created Date:

May 26 1999 12:00AM