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Abstract
Samples of seams having neoprene-based and butyl-based adhesives were cut from two EPDM roof systems that were 86 and 39 months old. Creep-rupture tests in a T-peel configuration were conducted on specimens cut from the samples and the results compared with the measured short-term peel strengths of companion specimens. The thickness of the adhesive layer was measured for each specimen. The creep-rupture results were also compared with those from previous studies on laboratory-prepared specimens. The analysis showed that the peel strenghts of the seams were typical of the non-primed neoprene-based and butyl-based seams sampled from roofs in service. The thicknesses of the adhesive layers were generally greater than those found for in specimens previously cut from roofs. In general, the times-to-failure for these field specimens (which had relatively thick adhesive layers) were considerably greater than those found for laboratory specimens prepared using well-cleaned EPDM rubber and thin layers of adhesive.
Samples of seams having neoprene-based and butyl-based adhesives were cut from two EPDM roof systems that were 86 and 39 months old. Creep-rupture tests in a T-peel configuration were conducted on specimens cut from the samples and the results compared with the measured short-term peel strengths of companion specimens. The thickness of the adhesive layer was measured for each specimen. The creep-rupture results were also compared with those from previous studies on laboratory-prepared specimens. The analysis showed that the peel strenghts of the seams were typical of the non-primed neoprene-based and butyl-based seams sampled from roofs in service. The thicknesses of the adhesive layers were generally greater than those found for in specimens previously cut from roofs. In general, the times-to-failure for these field specimens (which had relatively thick adhesive layers) were considerably greater than those found for laboratory specimens prepared using well-cleaned EPDM rubber and thin layers of adhesive.
Date
0/1992
0/1992
Author(s)
Walt Rossiter Jr; J Martin; J Lechner; J Seiler Jr
Walt Rossiter Jr; J Martin; J Lechner; J Seiler Jr
Page(s)
333-343
333-343
Keyword(s)
creep rupture; EPDM; creep rupture resistance;
creep rupture; EPDM; creep rupture resistance;