Implementing Dynamic Cone Penetrometer and Lightweight Deflectometer in Indiana

Indiana Department of Transportation (DOT) has been using density and moisture control for compaction control in embankment construction for many years. During this time, there has been disconnect between design and construction because embankment design is based on strength, whereas compaction control during construction measures density and moisture content. Indiana DOT and Purdue University Joint Transportation Research Program (JTRP) recommended the use of the dynamic cone penetrometer (DCP) and lightweight deflectometer (LWD) as alternative means of embankment and subgrade compaction control. Indiana DOT implemented research recommendations by constructing several pilot projects and revising recommendations as necessary. The revised recommendations were then used as more than 20 million cubic yards of soil and several million tons of aggregates were compacted with DCP and LWD measurements used for compaction control. This paper summarizes the implementation of DCP and LWD and the phasing out of nuclear density gauges, thus narrowing the gap between design and construction by measuring strength and stiffness in the field.

• Record URL:
  http://www.trb.org/Main/Blurbs/172801.aspx
• Availability:
  • Find a library where document is available. Order URL: http://www.trb.org/Main/Blurbs/172801.aspx
• Authors:
  • Siddiki, Nayyar
  • Walker, Ron
  • Sommer, Kurt
  • Coffman, Jamie
  • Kim, Daehyeon
• Publication Date: 2015-6

Language

• English

Media Info

• Media Type: Digital/other
• Features: Bibliography; Figures; Tables;
• Pagination: pp 32-40
• Monograph Title: Geotechnical Research Deployment: How Organizations Encourage Innovation: Lessons Learned. Presentations from the 93rd Annual Meeting of the Transportation Research Board, January 14, 2014, Washington, D.C.
• Serial:
  • Transportation Research Circular
  • Issue Number: 199
  • Publisher: Transportation Research Board
  • ISSN: 0097-8515

Subject/Index Terms

• TRT Terms: Compaction; Cone penetrometers; Deflectometers; Embankments; Measuring instruments; Subgrade (Pavements)
• Identifier Terms: Indiana Department of Transportation
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 01578223
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: Oct 19 2015 10:38AM