THE EFFECT OF BEDROCK DEPTH ON PAVEMENT RESPONSE

Bedrock depth has a great impact on the accuracy of back-calculated layer moduli. There are ways to determine the bedrock depth, such as by augering, GPR, and DCP tests. However, to determine the bedrock depth from FWD data is the easiest and least expensive way. The effects of bedrock depth on FWD responses for an in-service pavement in Jacksboro, Texas are documented. In addition, a comparison between the bedrock depths determined from augering and DCP tests with an algorithm using FWD maximum surface deflection data is discussed in this paper.

• Corporate Authors:

  Highway Geology Symposium

  North Carolina DOT, Geotechnical Unit, P.O. Box 3279
  Asheville, NC  United States  28802
• Authors:
  • Chen, D H
  • Bilyeu, J
  • Murphy, M
• Conference:
  • 49th Highway Geology Symposium
  • Location: Prescott, Arizona
  • Date: 1998-9-10 to 1998-9-14
• Publication Date: 1998

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 399-407

Subject/Index Terms

• TRT Terms: Bedrock; Deflection tests; Dynamic penetration test; Falling weight deflectometers; Ground penetrating radar; Pavement layers; Pavement performance
• Subject Areas: Geotechnology; Highways; I43: Rock Mechanics;

Filing Info

• Accession Number: 00760805
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 15 1999 12:00AM