- Author
- Jessup, D. A. | Weissberg, S. G. | Weber, C. G.
- Title
- Accelerated Aging of Fiber Building Boards.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
- BMS 4, October 11, 1938, 9 p.
- Keywords
- fiberboards | building boards | aging (materials) | stability | building construction
- Abstract
- Fiber building boards are being tested to determine whether they have satisfactory permanence to justify their wide use in low-cost house construction. Accelerated aging is being used because this information is urgently needed, inasuch as it would take years to obtain the effects of normal aging. The aging treatments include cycles of wetting, drying, freezing, and heating in dry air, and the stability is judged by changes in physical and chemical properties. The properties most affected by aging are water absorption, nail-holding power, flexural strength, and permeability to air. Results thus far obtained are favorable. After being subjected to the aging cycles for a total of 300 hours, only two of the boards tested showed serious loss of strength and other desirable properties, despite the drastic nature of the treatments.