00780166

Component

https://doi.org/10.3141/1680-06

http://scholar.google.com...cker&publication_year=1999

Premature failure of crack sealants and fillers in the field calls into question the effectiveness of these materials as a treatment for cracked asphalt concrete (AC) pavements. Although standard sealant test methods ensure the consistency of the product, they fail to account for the ability of the sealant material to bond to AC, especially at cold temperatures after the material has aged. In an attempt to evaluate this behavior, a study was undertaken at Michigan Technological University, through sponsorship by the Michigan Department of Transportation. This study's objective was to develop a laboratory testing protocol to evaluate crack sealants and fillers in an attempt to obtain better predictions of field performance. The developed protocol tests sealed AC blocks at a low temperature before and after accelerated laboratory aging to assess stiffening and failure characteristics in tension of the sealant and filler materials. To date, four laboratory phases have been completed to verify the repeatability of the testing, and preliminary correlation has been made with limited field data. The results indicate that the developed protocol is able to measure relative sealant performance in various configurations, but it is not possible to establish definitive relationships between laboratory testing and field performance at this time. Additional testing of materials, with an emphasis on field correlation, will be necessary to calibrate the test procedure.

This paper appears in Transportation Research Record No. 1680, Preventive Maintenance and Evaluation of Pavements and Structures.

English

p. 36-43

1999

Transportation Research Record

0309071062

Figures (6) ; References (12) ; Tables (2)

Accelerated tests; Asphalt concrete pavements; Correlation analysis; Failure; Fillers (Materials); Laboratory tests; Low temperature; Pavement cracking; Performance evaluations; Sealing compounds; Stiffness

Field data; Repeatability

Data and Information Technology; Geotechnology; Highways; Maintenance and Preservation; Materials; I35: Miscellaneous Materials; I61: Equipment and Maintenance Methods

TRIS, TRB, ATRI

Dec 2 1999 12:00AM

• EFFECTIVENESS OF MAINTENANCE TREATMENTS OF FLEXIBLE PAVEMENTS
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• FUNDAMENTAL CONCEPTS OF HEAT-STRAIGHTENING REPAIR FOR DAMAGED STEEL BRIDGES
• LIFE-CYCLE COST ANALYSIS FOR ZINC AND OTHER PROTECTIVE COATINGS FOR STEEL STRUCTURES
• MATERIAL CHARACTERIZATION OF SILICONE SEALANTS
• METHOD TO EVALUATE RIGID-PAVEMENT JOINT SEALANT UNDER CYCLIC SHEAR AND CONSTANT HORIZONTAL DEFLECTIONS
• MICROSURFACING USAGE GUIDELINES
• PAVEMENT PREVENTIVE MAINTENANCE: KEY TO QUALITY HIGHWAYS
• PLANNING, DESIGNING, AND IMPLEMENTING HEAT-STRAIGHTENING REPAIR OF BRIDGES
• SELECTING A PREVENTIVE MAINTENANCE TREATMENT FOR FLEXIBLE PAVEMENTS