Installation of Hot-Applied Joint Sealants


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Title: Installation of Hot-Applied Joint Sealants

Author(s): C. Seibel

Publication: Special Publication

Volume: 94


Appears on pages(s): 917-924

Keywords: asphalts; bitumens; cracking (fracturing); heating; installing; joint fillers; joint sealers; melting; pavements; rubber; Construction

Date: 7/1/1987

The background and development of the specialized equipment required for the proper preparation and installation of hot-applied joint sealants is reviewed. The need to use specially designed melter-applicators is embellished. Many of the disastrous field problems resulting from failure to use approved equipment, as well as the appropriate sealant, are discussed in detail. The evaluation of field preparation and application equipment for hot-applied joint fillers and sealants is set forth, from hand pots and so-called tar of roofers' kettles to agitation, recirculation, and extrusion systems of today's melter-applicators. The required specialized laboratory test equipment is also discussed as is the correlation of test results with respect to field installation temperature parameters. Attention is also given to the proper selection of different types of sealants by basic constituents for compatibility with pavement type and previously used sealants and fillers.