- Author
-
Martin, J. W.
|
Rossiter, W. J., Jr.
|
Embree, E.
- Title
- Is Your Adhesive Layer Thick Enough?
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Journal
-
Professional Roofing,
Vol. 21,
No. 5,
30-37,
1991
- Keywords
-
roofs
|
adhesives
|
seams
|
bonding
|
joint failures
|
strength
|
creep rupture
|
peel stress
|
stress (mechanics)
- Abstract
- Research indicates that the lifetime of an EPDM roof may be prolonged significantly with a thicker layer of adhesive in the seams. The objectives of this research on the strength and creep-rupture properties of EPDM joints were: [*] To determine from a small but important set of material and fabrication variables (adhesive thickness, cure time, mechanical load, adhesive type and surface cleanness), those variables which are primarily responsible for causing joint failures; [*] To rank these experimental variables in the order in which they affect the strength and creep-rupture life of butyl-adhered EPDM joints; and [*] To determine the maximum peel stress an EPDM joint can sustain over its design life.