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Title:

PROBABILISTIC APPROACH TO EVALUATING CRITICAL TENSILE STRENGTH OF BITUMINOUS SURFACE COURSES

Accession Number:

00483632

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309047102

Abstract:

The strength of the upper layer (surface course) is one of the important indices of pavement serviceability. The serviceability of the pavement will be compromised when the stresses due to axle loads exceed the strength of the upper layer. The probability of failure of a structure is a function of the load effect and the resistance of the structure. In this paper, the load effect on the pavement structure is defined as the radial stress induced by traffic loading, and the resistance is defined as the layer strength. Therefore failure of the surface course is defined as occurring when the radial horizontal stress exceeds the horizontal tensile strength of the surface course. Basic variables for reliability analysis are introduced along with methods for determining the probability distributions of the basic variables. Monte Carlo simulation is used to determine the values for each variable for calculating radial stress using Boussinesq one-layer theory. First-order, second-moment probabilistic methods are used to determine the reliability index and critical tensile strength of the surface course. An example reliability study, using data for I-85 in South Carolina, is presented. Reliability and critical tensile strength of the surface course are obtained for the highway. The critical stength value is evaluated, on the basis of field conditions, to verify its usefulness. Pavement data for rutting and stripping are compared with tensile strength data for the upper pavement layer to evaluate the critical tensile strength value.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1171, Asphalt Materials and Mixtures.Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

Monograph Accession #:

01416514

Authors:

Kim, Kwang W
Burati Jr, James L

Pagination:

p. 131-138

Publication Date:

1988

Serial:

Transportation Research Record

Issue Number: 1171
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309047102

Features:

Figures (8) ; References (14) ; Tables (6)

Uncontrolled Terms:

Probabilistic analysis; Rut

Old TRIS Terms:

Subject Areas:

Data and Information Technology; Freight Transportation; Highways; Materials; I31: Bituminous Binders and Materials

Files:

TRIS, TRB, ATRI

Created Date:

May 31 1989 12:00AM

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