Determination of Resilient Modulus of Subgrade Using Cyclic Plate Loading Tests

Resilient modulus of subgrade is often necessary for pavement design and determined by cyclic triaxial tests or correlation with other laboratory or insitu test results (such as CBR and DCP data). Cyclic plate loading tests were conducted in this study to determine the resilient modulus of a weak subgrade. The weak subgrade was made of 75% Kansas River sand and 25% kaolin and compacted at wet of optimum in a large geotechnical testing box (2m x 2.2m x 2m). This subgrade was first evaluated by DCP tests and then tested under a 30-cm diameter rigid plate at four different magnitudes of cyclic loading. During the tests, the deformations of the plate and the subgrade surface were monitored. The test results showed that the plate deformation increased with the number of cycles. An elastic solution was used based on the rebound deformation of the plate to calculate the resilient modulus of the subgrade. The calculated resilient modulus of the subgrade decreased and approached a stable value with the number of cycles under different magnitudes of cyclic loading. The calculated resilient modulus from the cyclic plate loading tests was compared with that determined based on the correlation with the CBR value of the subgrade.

• Record URL:
  • https://doi.org/10.1061/41165(397)485
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784411650
• Supplemental Notes:
  • © 2011 American Society of Civil Engineers
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Qian, Yu
  • Han, Jie
  • Pokharel, Sanat K.
  • Parsons, Robert L.
• Conference:
  • Geo-Frontiers Congress 2011
  • Location: Dallas TX, United States
  • Date: 2011-3-13 to 2011-3-16
• Publication Date: 2011

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References;
• Monograph Title: Geo-Frontiers 2011 Conference: Advances in Geotechnical Engineering

Subject/Index Terms

• TRT Terms: Deformation; Load tests; Modulus of resilience; Plate bearing test; Subgrade (Pavements)
• Subject Areas: Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01347075
• Record Type: Publication
• ISBN: 9780784411650
• Files: TLIB, TRIS, ASCE
• Created Date: Aug 8 2011 2:06PM