Accession Number : ADA294754

Title :   Joint Sealants for Airfield Pavements.

Descriptive Note : Final rept. Oct 91-Dec 93,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB

Personal Author(s) : Lynch, Larry N. ; Newman, J. K.

PDF Url : ADA294754

Report Date : APR 1995

Pagination or Media Count : 151

Abstract : The objective of this study was to evaluate the field performance of five different types of pavement joint sealant materials at five different airports located in varying climatic regions. Each of the sealant materials was installed at all five airport. The same contractor was used to install the sealants at each of the five airports and the same lot number of the various sealants was installed at each airport. The sealants were stored in a temperature controlled warehouse until they were needed at the job site and 100 percent inspection was provided at each airport. These controls helped to minimize any variations in the service life of the sealants that were not material related. Differential Scanning Calorimetry and Fourier Transform Infrared Spectroscopy were investigated as potential laboratory analysis techniques for joint sealants. The results of the field evaluations indicate the conformance of a sealant material to an appropriate material specification does not automatically signify satisfactory field performance; different types of sealants do perform differently based upon climatic exposure; and no revisions are necessary to procedures listed in the FAA Item P.605 for joint sealing projects. The research delineated the fact that material characterization procedures are needed for pavement joint sealants. These types of procedures could be used in material specifications that would be more indicative of sealant performance.

Descriptors :   *FIELD TESTS, *PAVEMENTS, *LANDING FIELDS, *SEALING COMPOUNDS, SCANNING, FOURIER TRANSFORMATION, LABORATORY TESTS, INFRARED SPECTROSCOPY, JOBS, LIFE EXPECTANCY(SERVICE LIFE), EXPOSURE(GENERAL), SPECIFICATIONS, MATERIALS, SITES, REGIONS, CLIMATE, LABORATORY PROCEDURES, TEMPERATURE CONTROL, AIRPORTS, WAREHOUSES, JOINTS, CALORIMETRY.

Subject Categories : Terminal Flight Facilities
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE