Subgrade Design Parameters from Samples Prepared with Different Compaction Methods
Publication: Journal of Transportation Engineering
Volume 133, Issue 2
Abstract
The standard and modified Proctor compaction tests have been widely used for evaluation of design properties and compaction characteristics of subgrade soils. However, different types of compaction roller equipment, each producing a different level of soil compaction, are used in the field for compaction of subgrade soils. The purpose of this paper is to evaluate the design properties of compacted subgrade soils using the gyratory compactor made by Servopac to simulate field compaction conditions. Field compaction data were collected from a road construction site in Pusan, Korea. After compaction of the subgrade soil in the field using a vibratory roller was concluded, block samples of the subgrade material were collected. Disturbed soil samples were collected for preparation of specimens in the laboratory using the Proctor compaction and gyratory compaction methods. Unconfined compression test results show that the peak strength, cohesion, and elastic modulus values of the specimens prepared from the field block samples and that of the specimens prepared using the Superpave gyratory compactor with a vertical pressure are similar. On the other hand, much higher values were obtained for these quantities for the laboratory specimens prepared using the modified Proctor method. Our test results indicate that the evaluation of design properties of subgrade soils based solely on the Proctor compaction tests may not be appropriate.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This research was sponsored by Grant No. R05-2003-000-10077-0 from the Basic Research Program of the Korea Science and Engineering Foundation.
References
ASTM. (1993). Soil and rock, Sec. 4: Construction, Vol. 4.08, West Conshohoken, Pa.
Bowles, J. E. (1992). Engineering properties of soils and their measurement, McGraw-Hill, New York.
Butcher, M. (1997). “Determining gyratory compaction characteristics using the Servopac gyratory compactor.” Presented at the Transportation Research Board Annual Meeting.
Hinrichsen, J. (2000). “A comparison of four brands Superpave gyratory compactor.” Presented at the Transportation Research Board Annual Meeting.
Kiekbusch, E., Kiekbusch, M., and Schuppener, B. (1979). “A new direct simple shear device.” Geotech. Test. J., 2(4), 190–199.
Korean Standards (KS). (1990). Construction Materials F Series, Korean Industrial Standards (in Korean).
Mallick, R. B. (2000). “Use of superpave gyratory compactor to characterize hot mix asphalt (HMA).” Presented at the Transportation Research Board Annual Meeting.
McRae, J. L., and McDaniel, A. R. (1958). “Progress report on the Corps of Engineers’ kneading compactor for bituminous mixtures.” Proc., AAPT, 27, 357–382.
Nam, S. (2000). Principles of construction in civil engineering, Cheongun Inc.
Ortolani, L., and Sandberh, H. A. (1952). “The gyratory shear method of modeling asphaltic concrete test specimens; its development and correlation with field compaction methods.” Proc., AAPT, 21, 280–297.
Saada, A. S., and Townsend, F. C. (1981). “State of art: Laboratory strength testing of soils.” ASTM Spec. Tech. Publ. 740, 7–77.
Strategic Highway Research Program (SHRP). (1994). “The SUPERPAVE mix design system manual of specifications, test methods and practices.” SHRP-A-379, National Research Council, Washington, D.C.
Van Der Poel, P. J. (1974), “Creep testing: A simple tool to judge asphalt mix stability.” Proc., AAPT, 43, 253–284.
Yoder, E. J., and Witczak, M. W. (1975). Principles of pavement design, 2nd Ed., Wiley, New York.
Information & Authors
Information
Published In
Copyright
© 2007 ASCE.
History
Received: Aug 25, 2005
Accepted: Dec 20, 2005
Published online: Feb 1, 2007
Published in print: Feb 2007
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.