00667666

Component

http://onlinepubs.trb.org...trr/1994/1435/1435-009.pdf

https://scholar.google.co...iriz&publication_year=1994

The Division of New Technology, Materials, and Research (NTM&R) of the California Department of Transportation sought a method to measure the spatial distribution and movement of moisture in a pavement section. Measurement of electrical resistivity was investigated because of the inverse relationship between resistivity and moisture content. NTM&R collaborated with Lawrence Livermore National Laboratory in applying electrical resistance tomography (ERT) to measure and subsequently image spatial resistivity. The results from two field experiments succeeded in showing images that correlate very well with layers in pavement sections. Images from sequential ERT measurements reveal water movement within the pavement and into the subgrade. Results suggest that ERT technology may be an important research tool in understanding moisture distribution and movement.

This paper appears in Transportation Research Record No. 1435, Pavement and Traffic Monitoring and Evaluation. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01401245

English

p. 69-76

1994-9

Transportation Research Record

0309055121

Figures (9) ; References (9) ; Tables (4)

Field studies; Image processing; Imagery; Moisture content; Motion; Pavements; Tomography; Traffic distribution

Imaging systems

Electrical resistance tomography; Moisture movement

Highways; Pavements; I23: Properties of Road Surfaces

TRIS, TRB

Oct 13 1994 12:00AM

• CAN THE HIGHWAY COMMUNITY BE READY FOR METRIC BY 1996?
• COMPARATIVE TESTING OF PROFILOMETERS
• COMPARISON OF WEIGHT DATA COLLECTED AT WEIGH-IN-MOTION SYSTEMS ON THE SAME ROUTE
• CORRELATION OF PRESENT SERVICEABILITY RATINGS WITH INTERNATIONAL ROUGHNESS INDEX
• CORRELATION STUDY OF CALIFORNIA PROFILOGRAPH AND K. J. LAW PROFILOMETER
• DESIGN AND RELIABILITY ASSESSMENT OF DATA ACQUISITION SYSTEM FOR LOUISIANA ACCELERATED LOADING DEVICE
• EVALUATION OF ROUGHNESS SYSTEM OF AUTOMATIC ROAD ANALYZER
• EVALUATION OF STRATEGIC HIGHWAY RESEARCH PROGRAM--LONG-TERM PAVEMENT PERFORMANCE SURFACE DISTRESS DATA COLLECTION PROCEDURES
• FEASIBILITY OF AUTOMATING PAVEMENT DISTRESS ASSESSMENT USING MATHEMATICAL MORPHOLOGY
• FINDINGS FROM FIVE YEARS OF OPERATING OREGON'S AUTOMATED WOODBURN PORT OF ENTRY
• GETTING BETTER TRUCK FLOWS AND LOADS: TRUCK WEIGHT CASE STUDY
• HEAT TRANSFER FROM VEHICULAR CATALYST TO PAVEMENT
• IMAGE-PROCESSING METHODS FOR AUTOMATED DISTRESS EVALUATION
• KANSAS EXPERIENCE WITH SMOOTHNESS SPECIFICATIONS FOR CONCRETE PAVEMENTS
• LONG-TERM PAVEMENT PERFORMANCE HISTORY OF SULFUR-EXTENDED ASPHALT TEST ROADS IN EASTERN PROVINCE OF SAUDI ARABIA
• MEASUREMENT OF TRUCK TIRE FOOTPRINT PRESSURES
• NETWORK-LEVEL PERFORMANCE EVALUATION OF ASPHALT-RUBBER PAVEMENT TREATMENTS IN ARIZONA
• OBJECTIVES AND CONTENT OF AASHTO GUIDE TO METRIC CONVERSION
• PREDICTION OF TIRE-ROAD FRICTION FROM TEXTURE MEASUREMENTS
• RELATIONSHIPS BETWEEN INTERNATIONAL ROUGHNESS INDEX AND PRESENT SERVICEABILITY RATING
• SENSITIVITY OF REAR WHEEL PAVEMENT LOADING TO VARIATIONS IN HEAVY VEHICLE PARAMETERS, SPEED, AND ROAD ROUGHNESS
• SIDE FRICTION DEMANDED AND MARGINS OF SAFETY ON HORIZONTAL CURVES
• STRATEGIC HIGHWAY RESEARCH PROGRAM--LONG-TERM PAVEMENT PERFORMANCE INFORMATION MANAGEMENT SYSTEM