ELECTRICAL RESISTANCE TOMOGRAPHY IMAGING OF MOISTURE DISTRIBUTION IN PAVEMENT SECTIONS

The California Transportation Department (Caltrans) has sought a method to measure the spatial distribution of moisture in a pavement system and to determine moisture movement through the pavement structure. To measure the spatial moisture distribution in pavement structures, a collaborative study with the Lawrence Livermore National Laboratory (LLNL) was conducted. Electrical resistance tomography (ERT) was considered to be suitable for this purpose. ERT technology produces images of the spatial resistivity distribution in pavement structures and subgrade soils. The resistivity distribution correlates with the moisture distribution in pavement structures: high resistivity is interpreted as low moisture content and low resitivity is interpreted as high moisture content. This paper presents a brief description of ERT technology and the results of Caltrans' experiments on ERT.

• Corporate Authors:

  Minnesota Department of Transportation

  Transportation Building, 395 John Ireland Boulevard
  St Paul, MN  United States  55155
• Authors:
  • Kim, O K
  • Nokes, W A
  • Buettner, M H
  • Daily, W
• Conference:
  • 4th International Conference, Bearing Capacity of Roads and Airfields
  • Location: Minneapolis, MN
  • Date: 1994-8-17 to 1994-8-21
• Publication Date: 1994

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 783-805
• Serial:
  • Volume: 1

Subject/Index Terms

• TRT Terms: Correlation analysis; Electrical resistivity; Moisture content; Motion; Pavement layers; Pavements; Physical distribution; Resistance (Electricity); Soils; Studies; Subgrade (Pavements); Tomography; Traffic distribution
• Identifier Terms: Lawrence Livermore National Laboratory
• Uncontrolled Terms: Moisture movement; Pavement structure
• Old TRIS Terms: Correlations; Resistivity
• Subject Areas: Data and Information Technology; Design; Freight Transportation; Geotechnology; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00730089
• Record Type: Publication
• Files: TRIS, STATEDOT
• Created Date: Nov 27 1997 12:00AM