DYNAMIC RESPONSE OF PAVING MATERIALS

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.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1987/1136/1136-006.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=DYNAMIC+RESPONSE+OF+PAVING+MATERIALS&author=J.+Sousa&author=C.+Monismith&publication_year=1987
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309045169
• 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
• Authors:
  • Sousa, Jorge B
  • Monismith, Carl L
• Publication Date: 1987

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 57-68
• Monograph Title: Pavement design
• Serial:
  • Transportation Research Record
  • Issue Number: 1136
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Asphalt concrete; Axial loads; Damping (Engineering); Data collection; Dynamic loads; Frequency (Electromagnetism); Information processing; Paving materials; Poisson ratio; Sand; Shear modulus; Shear strain; Silty clays; Software; Temperature; Testing equipment; Torsion
• Uncontrolled Terms: Dynamic response
• Old TRIS Terms: Internal damping; Paving mixtures; Poissons ratio
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00469592
• Record Type: Publication
• ISBN: 0309045169
• Files: TRIS, TRB, ATRI
• Created Date: Jul 31 1988 12:00AM