- Author
-
Fishburn, C. C.
- Title
- Water Permeability and Weathering Resistance of Stucco-Faced, Gunite-Faced, and "Knap Concrete-Unit" Walls.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
-
BMS 94,
December 2, 1942,
22 p.
- Keywords
-
walls
|
concretes
|
water
|
permeability
|
weather effects
|
penetration
- Abstract
- The water permeabilities of small stucco- and gunite-faced walls and of walls built of "Knap concrete units" were measured before and after outdoor weathering. Six kinds of stucco facings, 2 thicknesses of gunite facings, and 7 kinds of units were represented in a group of 26 walls. All of the stucco- and gunite-faced walls were highly resistant to water penetration. Periods of outdoor exposure at Washington, DC, varying from 16 to 49 months, had no important effect on permeability. The resistance to penetration of walls built of "Knap concrete units" was excellent after the walls were painted.