MODIFICATIONS TO RESILIENT MODULUS TESTING PROCEDURE AND USE OF SYNTHETIC SAMPLES FOR EQUIPMENT CALIBRATION

Modifications to the resilient modulus testing procedure (AASHTO T-274) and the use of synthetic samples for equipment evaluation and calibration are described. The modifications to the AASHTO T-274 were carried out to produce a testing protocol for use in the testing program of the Strategic Highway Research Program. The modifications were aimed at producing a more repeatable and less complicated test procedure. The main changes are the use of external linear variable differential transformers (LVDTs) for deformation measurements of all soil types and complete modification of the loading sequence and eliminating low deviator stresses, which produce high variability and high deviator stresses, which produce sample failure. The use of synthetic samples (polyurethane) with well-known properties to calibrate and evaluate resilient modulus equipment is also described. Synthetic samples could be an excellent choice in the development of a standard procedure for calibration of resilient modulus equipment.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1990/1278/1278-007.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=MODIFICATIONS+TO+RESILIENT+MODULUS+TESTING+PROCEDURE+AND+USE+OF+SYNTHETIC+SAMPLES+FOR+EQUIPMENT+CALIBRATION&author=G.+Claros&author=W.+Hudson&author=K.+Stokoe+II&publication_year=1990
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1278, Dynamic Testing of Aggregates and Soils and Lateral Stress Measurements 1990. 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:
  • Claros, German
  • Hudson, W R
  • Stokoe II, Kenneth H
• Publication Date: 1990

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 51-62
• Monograph Title: Dynamic testing of aggregates and soils and lateral stress measurements
• Serial:
  • Transportation Research Record
  • Issue Number: 1278
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Calibration; Deformation; Deviatoric stress; Differentials (Gears); Modulus of resilience; Polyurethane resins; Samples; Test procedures; Testing equipment; Transformers
• Identifier Terms: Strategic Highway Research Program
• Uncontrolled Terms: Linear variable differential transformers; Modifications
• Old TRIS Terms: Deviator stress
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00605541
• Record Type: Publication
• ISBN: 0309050553
• Files: TRIS, TRB, ATRI
• Created Date: Mar 31 1991 12:00AM