Investigation of Dual Roller-Integrated MDP/CMV Compaction Monitoring Technologies and Measurement Influence Depth

Caterpillar Inc. has a plan to bring intelligent compaction technology to the market with vibratory machines that use the compaction meter value (CMV) technology with vibratory and non-vibratory machines that use machine drive power (MDP). Previous research conducted by Iowa State University indicates that both CMV and MDP provide an indication of soil compaction through empirical correlations to various in-situ spot test measurements. Although both technologies are empirically well correlated to various compaction parameter measurement values over the length of a test strip, it is believed that the CMV and MDP values are sensitive to much different measurement influence depths, which changes how in-situ spot test measurements should be performed and measured. One objective of this study is to document the measurement influence depth for 2 different field conditions--soft underlying layer and stiff underlying layer. With different measurement influence depths, a combined MDP-CMV parameter measurement could potentially provide a much more robust machine value parameter to be used during the compaction process. With a better understanding of the measurement influence depths of MDP and CMV for different underlying subgrade stiffness conditions, these parameters may be coupled to provide improved indications of the compaction layer and underlying layer stiffness. If feasible, this coupled technology will provide a whole new approach to roller-integrated compaction monitoring technology.

Language

  • English

Project

  • Status: Completed
  • Sponsor Organizations:

    Caterpillar

    ,   United States 
  • Performing Organizations:

    Iowa State University, Ames

    Center for Transportation Research and Education
    2711 South Loop Drive, Suite 4700
    Ames, IA  United States  50010-8664
  • Principal Investigators:

    Cackler, Thomas

    White, David

  • Start Date: 20070101
  • Expected Completion Date: 0
  • Actual Completion Date: 20080831
  • Source Data: RiP Project 14360

Subject/Index Terms

Filing Info

  • Accession Number: 01460276
  • Record Type: Research project
  • Source Agency: Midwest Transportation Consortium
  • Files: UTC, RiP
  • Created Date: Jan 3 2013 1:22PM