Forensic Analysis Techniques for Joint Sealants

by Rogers T. Graham, US Army Engineer Waterways, Experiment Station, Vicksburg, United States,
Larry N. Lynch, US Army Engineer Waterways, Experiment Station, Vicksburg, United States,



Document Type: Proceeding Paper

Part of: Materials: Performance and Prevention of Deficiencies and Failures

Abstract: Growing concerns involving the field performance of pavement joint sealant materials has illustrated the need for forensic capabilities in determining the cause of sealant failures. Methods to determine specific material deficiencies such as the improper mixing of two-component sealants and over- or prolonged heating of hot-applied sealants are desired. The U.S. Army Waterways Experiment Station has investigated three methods; Gel Permeation Chromatography, Fourier Transform Infrared Spectroscopy, and Photo Diode Array analysis as forensic tools. A description of the techniques and a brief summary of analytical results are presented here.

Subject Headings: Adhesives | Joints | Forensic engineering | Pavement condition | Construction materials | Material failures | Fourier analysis

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