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Title:

USING NONDESTRUCTIVE TESTING IN THE SEMI-ARID ZONE OF PERU

Accession Number:

00470967

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309045134

Abstract:

Presented in this paper is a methodology for nondestructive pavement testing and its application in the rehabilitation program of the Talara and Piura Airports, located in the Pacific region of Peru approximately 1000 to 1100 km north of Lima. The area's water table is 2 to 8 m under the subgrade surface and the annual rainfall is less than 150 mm. Each airport has a 2500-m runway and is used mainly by medium-sized and small jet aircraft such as B-727s, B-737s, and F-28s. The existing pavement materials do not meet standard specifications for plasticity, gradation, and California bearing ratio, and the thickness is less than that recommended by the Federal Aviation Administration. Nevertheless, 15 years' experience generally indicates adequate pavement performance. It was concluded that the most practical way to interpret the actual performance of these marginal materials is to use nondestructive testing to determine the elastic parameters of the existing subgrade and pavement. The methodology used in Piura and Talara is based on the Hogg model of a thin plate on an elastic foundation. The subgrade modulus can be determined without prior knowledge of the thickness or the characteristics of the pavement layers. The pavement modulus can then be calculated for any given load and center deflection. The survey indicates that existing pavement materials in such arid zones can generate sufficient bearing capacity to support traffic loads of B-727s, B-737s, F-28s, and DC-8s. The test results were used to upgrade the existing airport so that they could carry 600 annual operations of B-727s with total gross weights of 160,000 lb for 20 years.

Supplemental Notes:

Publication of this paper sponsored by Committee on Environmental Factors Except Frost. 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 #:

01418180

Authors:

Greenstein, Jacob

Pagination:

pp 59-70

Publication Date:

1987

Serial:

Transportation Research Record

Issue Number: 1137
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309045134

Media Type:

Print

Features:

Figures (11) ; References (16) ; Tables (5)

Uncontrolled Terms:

Rehabilitation

Geographic Terms:

Peru

Old TRIS Terms:

Peru

Subject Areas:

Geotechnology; Highways; Hydraulics and Hydrology; Materials; Pavements; I42: Soil Mechanics

Files:

TRIS, TRB, ATRI

Created Date:

Aug 31 1988 12:00AM

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