- Author
- Sushinsky, G. F. | Mathey, R. G.
- Title
- Fatigue Tests of Bituminous Membrane Roofing Specimens. Technical Note.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
- NBS TN 863, April 1975,
- Distribution
- Available from National Technical Information Service
- Keywords
- roofing; membranes; bitumens; fatigue (materials); fatigue tests; test methods
- Abstract
- Tensile and flexural fatigue tests were performed on built-up roof membrane specimens (ASTM Designation: D2523-70) fabricated from four different material systems. The tensile fatigue tests were run under cyclic load control conditions while specimens tested in flexural fatigue were run under cyclic midspan displacement control. Tests were run at ambient laboratory conditions, generally 70 plus or minus 2F (21 plus or minus 1C), and at 0 plus or minus 2F (-18 plus or minus 1C). Curves based on the experimental results are plotted relating the peak load or displacement to the median fatigue lifetimes for specimens fabricated from each material. Performance criteria for roof membranes subject to fatigue loading are recommended.