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Title:

DYNAMIC RESPONSE OF PAVING MATERIALS

Accession Number:

00469592

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309045169

Abstract:

Equipment developed to determine the dynamic properties of paving materials in axial and torsional loading is described. Dynamic properties were determined by the excitation of hollow cylindrical specimens using two independent sinusoidal loads with frequencies up to 30 Hz. An IBM PC/AT equipped with a Metrabyte DASH16 data acquisition board was used to directly control two MTS hydraulic servorams. Menu-driven software was developed, taking advantage of direct memory access channels, so that data acquisition, wave form generation, and closed-loop control could take place simultaneously at rates above 5,000 samples/sec/channel. To convert raw data into graphs and parameters representative of dynamic material properties, a postprocessing menu-driven program was also developed. Dynamic properties of an asphalt concrete, a uniform sand, and a silty clay are presented. For the asphalt concrete, dynamic moduli in axial loading, dynamic shear moduli, internal damping determined in both axial and shear loading, and dynamic Poisson's ratios are presented for tests conducted at temperatures ranging from 11 deg C to 40 deg C. For the uniform sand and silty clay, dynamic shear moduli and internal damping as a function of stress state, magnitude of shear strain, and frequency of loading are presented.

Supplemental Notes:

Publication of this paper sponsored by Committee on Flexible Pavement Design. 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 Title:

Pavement design

Monograph Accession #:

01418141

Authors:

Sousa, Jorge B
Monismith, Carl L

Pagination:

pp 57-68

Publication Date:

1987

Serial:

Transportation Research Record

Issue Number: 1136
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309045169

Media Type:

Print

Features:

Figures (21) ; References (6)

Uncontrolled Terms:

Dynamic response

Old TRIS Terms:

Subject Areas:

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

Files:

TRIS, TRB, ATRI

Created Date:

Jul 31 1988 12:00AM

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