Form Approved
REPORT DOCUMENTATION PAGE
OMB No. 0704-0188
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1. AGENCY USE ONLY (Leave blank)
2. REPORT DATE
3. REPORT TYPE AND DATES COVERED
September 1996
Final Report
June 1990October 1991
4. TITLE AND SUBTITLE
5. FUNDING NUMBERS
Resilient Modulus Testing of Materials from Mn/ROAD, Phase 1
CPAR Project
Agreement No. 64632
Task Order No. 1
6. AUTHORS
Richard L. Berg, Susan R. Bigl, Jeffrey A. Stark and Glenn D. Durell
7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)
8. PERFORMING ORGANIZATION
REPORT NUMBER
U.S. Army Cold Regions Research and Engineering Laboratory
72 Lyme Road
Special Report 96-19
Hanover, New Hampshire 03755-1290
9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)
10. SPONSORING/MONITORING
AGENCY REPORT NUMBER
Minnesota Department of Transportation
395 John Ireland Boulevard Mail Stop 330
MN/RC-96/21
St. Paul, Minnesota 55155
11. SUPPLEMENTARY NOTES
For conversion of SI units to non-SI units of measurement consult ASTM Standard E380-93, Standard Practice for Use of the
International System of Units, published by the American Society for Testing and Materials, 1916 Race St., Philadelphia, Pa. 19103.
12a. DISTRIBUTION/AVAILABILITY STATEMENT
12b. DISTRIBUTION CODE
Approved for public release; distribution is unlimited.
Available from NTIS, Springfield, Virginia 22161
13. ABSTRACT (Maximum 200 words)
The U.S. Army Cold Regions Research and Engineering Laboratory (CRREL) conducted resilient modulus tests on
materials from the Mn/ROAD test site for the Minnesota Department of Transportation. Materials tested included samples
of the lean clay subgrade at the site and the two extreme grades of base designed specifically for Mn/ROAD. Some
specimens were tested in both frozen and subsequently "thawed" conditions; others were tested at room temperature
without ever having been frozen. Researchers performed linear regression analysis on the data to develop equations that
predict frozen modulus based on unfrozen water content and unfrozen modulus based on stress, degree of saturation and
density. We also reanalyzed data from two previously tested materials. CRREL can use the study's equations in the
Mechanistic Pavement Design and Evaluation Procedure under development at CRREL to predict estimated damage in
some Mn/ROAD test sections.
14. SUBJECT TERMS
15. NUMBER OF PAGES
103
Cold regions subgrades and bases
Resilient modulus
16. PRICE CODE
Mechanistic Pavement Design and Evaluation Procedure
17. SECURITY CLASSIFICATION
18. SECURITY CLASSIFICATION
19. SECURITY CLASSIFICATION
20. LIMITATION OF ABSTRACT
OF REPORT
OF THIS PAGE
OF ABSTRACT
UNCLASSIFIED
UNCLASSIFIED
UNCLASSIFIED
UL
Standard Form 298 (Rev. 2-89)
NSN 7540-01-280-5500
Prescribed by ANSI Std. Z39-18
298-102
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