Use of DCP (Dynamic Cone Penetrometer) and LWD (Light Weight Deflectometer) for QC/QA on Subgrade and Aggregate Base

The DCP (Dynamic Cone Penetrometer) and LWD (Light Weight Deflectometer) are becoming ever more popular as mechanistic-empirical pavement design/construct procedures evolve. These instruments provide the ability to quickly, accurately, and economically measure shear strength and stiffness of in-place base course and subgrade material, thus obviating the need for density testing. These instruments are rugged, portable, easy to operate and do not have the regulatory disadvantages of a Nuclear Density Gauge. This paper outlines the genesis of the DCP for soil testing and the respective applications for various DCP configurations. The various types of LWDs and the results they produce are described. Finally, on going efforts in the use of these instruments as well as standards for QC/QA (Quality Control/Quality Assurance) for subgrade and aggregate base for roads are discussed.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784410455
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Kessler, K
• Conference:
  • GeoHunan International Conference: Challenges and Recent Advances in Pavement Technologies and Transportation Geotechnics
  • Location: Changsha Hunan, China
  • Date: 2009-8-3 to 2009-8-6
• Publication Date: 2009

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References;
• Pagination: pp 62-67
• Monograph Title: Material, Design, Construction, Maintenance, and Testing of Pavement: Selected Papers From the 2009 GeoHunan International Conference

Subject/Index Terms

• TRT Terms: Aggregates; Cone penetrometers; Pavements; Quality assurance; Quality control; Subgrade (Pavements)
• Uncontrolled Terms: Lightweight deflectometers
• Subject Areas: Highways; Maintenance and Preservation; Pavements; I22: Design of Pavements, Railways and Guideways; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 01142876
• Record Type: Publication
• ISBN: 9780784410455
• Files: TRIS
• Created Date: Oct 30 2009 9:25AM