TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

Scanning Capacitive Arrays for Real-Time, In-Situ Imaging of Density and Thickness in HMA Roadways
Cover of Scanning Capacitive Arrays for Real-Time, In-Situ Imaging of Density and Thickness in HMA Roadways

Accession Number:

01156656

Record Type:

Monograph

Availability:

National Technical Information Service

5301 Shawnee Road
Alexandria, VA 22312 United States

Abstract:

This Innovations Deserving Exploratory Analysis (IDEA) project used JENTEK's capacitive sensor array technology, data acquisition instrumentation, inverse methods, and software to enable rapid, wide-area registered imaging of hot mix asphalt (HMA) density and thickness. The idea was to measure and analyze the frequency response of the JENTEK sensor at each of many individual locations, using electric fields penetrating to various depths inside and through the HMA, and thereby estimate the permittivity, conductivity, and thickness of the HMA. The observed correlation of permittivity with HMA density should enable the desired density vs. location information. Acquiring accurate and rapid HMA density measurements during construction will extend a highway's useful life, thereby minimizing the cost per year for the original construction. This technology may also prove useful for measuring soil density before construction, and for monitoring roadway degradation in-service.

Supplemental Notes:

This NCHRP-IDEA project was conducted by JENTEK Sensors, Inc., Waltham, Massachusetts. 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

Report/Paper Numbers:

Highway IDEA Project 138

Language:

English

Authors:

Sheiretov, Yanko
Lyons, Robert

Pagination:

29p

Publication Date:

2009-9

Serial:

NCHRP-IDEA Program Project Final Report

Publisher: Transportation Research Board

Edition:

Final Report

Media Type:

Print

Features:

Appendices (2) ; Figures; Photos; References (3) ; Tables (1)

Candidate Terms:

Imaging systems

Uncontrolled Terms:

Capacitive sensors; Permittivity

Subject Areas:

Construction; Highways; Materials; Pavements; I31: Bituminous Binders and Materials; I52: Construction of Pavements and Surfacings

Files:

TRIS, TRB

Created Date:

May 13 2010 12:50PM