United States Department of Transportation
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Evaluation of joint sealant materials : final report.
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1977-05-01
[PDF-5.88 MB]
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Abstract:In May, 1968, the Department's Research and Development Section initiated a project to evaluate joint sealants being marketed for use on roads and bridges. In the study, representatives of 31 companies installed 40 products primarily on one road and one bridge for evaluation. Thus, at first the project was primarily materials oriented; however, during the course of the study various aspects of design, construction and maintenance of joints were also investigated.
It is concluded that joints in concrete pavements and bridge decks are more effective (sometimes effective only) when adequately sealed. A joint sealant system should reject incompressibles or at least absorb the impact upon the joint of those incompressibles which intrude. The sealant system design should facilitate the cleaning action of rain and/or traffic in removal of undesirable material. A sealant system should prevent the passage through pavement joints. The sealant should be stable, remain non-sticky, and retain sufficient performance properties to function in a typical roadway environment at surface temperatures (in Louisiana) from 0 F. (-17.8 C) to 160 F (71.1 C). The sealant system should not create any harmful effects such as spalling, roughness, and noise. The sealant system should be effective for at least five years. Small failures eventually will occur but should not propagate.
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