- Author
-
Clark, E. J.
|
Campbell, P. G.
|
Frohnsdorff, G. J. C.
- Title
- Waterproofing Materials for Masonry. Final Report. January 1974-January 1975.
- Coporate
- National Bureau of Standards, Washington, DC
- Sponsor
- Department of Housing and Urban Development, Washington, DC
- Report
-
NBS TN 883,
October 1975,
- Distribution
- Available from National Technical Information Service
- Contract
- IAA-H-37-72
- Keywords
-
masonry; waterproofing; performance evaluation; laboratory tests; weathering; accelerated tests; water vapor; efflorescence; durability; criteria
- Abstract
- The initial effectiveness and durability characteristics of fifty-five clear masonry waterproofing materials were evaluated using laboratory tests. This report contains the results of initial performance tests including water absorption, water vapor transmission, resistance to efflorescence and change in appearance. Durability tests, including periodic measurement of water absorption after exposures to accelerated weathering and outdoor exposures, were also conducted. Based on test results, performance criteria for clear waterproofing materials were developed. In addition, recommendations for the application of waterproofing materials were formulated. Finally, the report contains a summary of a survey concerning field experiences with waterproofing and a brief theoretical discussion of water flow.