- Author
- Rossiter, W. J., Jr. | Martin, J. W. | Embree, E. | Seiler, J. F., Jr. | Byrd, W. E. | Ream, E.
- Title
- Effect of Ozone on the Creep-Rupture of Butyl-Adhered EPDM Seam Specimens.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD Neidig Roofing Co., York, PA
- Book or Conf
- National Roofing Contractors Association. Problems: Issues and Answers. 10th Conference on Roofing Technology, Proceedings. April 22-23, 1993, National Roofing Contractors Assoc., Rosemont, IL, Gaithersburg, MD, 85-92 p., 1993
- Keywords
- ozone | creep-rupture | EPDM | seams | roofs | adhesive performance | building technology | low-sloped roofing | single-ply roofing | time-to-failure
- Abstract
- EPDM roofing seam specimens, prepared using a commercially available butyl-based adhesive, were subjected to a creep-rupture experiment in peel in the presence of ozone. The times-to-failure of 12 replicate specimens were recorded at five ozone concentrations: ambient (about 0.01-0.03), 0.14, 0.26, 0.50, and 1.0 parts per million. The results of the study indicated that an increase in the ozone concentration significantly reduces the times-to failure over those observed at ambient levels. The shorter times-to-failure at elevated ozone levels were attributed to ozonolysis of the adhesive. The results emphasize the need to minimize incorporating peel stresses into seams of EPDM roofing membranes.