Water-proofing barrier
Abstract
Abstract A WATER-PROOFING BARRIER CHARACTERIZED BY ITS CONTROLLED SWELLING WHEN WET AND COMPRISING IN ADMIXTURE A WATERSWELLABLE COLLOIDAL CLAY, SUCH AS BENTONITE, AND A PARTICULATE, INORGANIC METAL SALT TREATED WITH AN OLEAGINOUS CARBOXYLIC ACID. PREFERABLY, THE METAL SALT IS CALCIUM CARBONATE, SUCH AS AMORPHOUS CHALK, TREATED WITH AN ACID LIKE OLEIC OR STEARIC ACIDS. THE MIXTURE IS PARTICULARLY ADAPTED AS A PROTECTIVE LAYER IN A BELOW GRADE CONCRETE ROOF SYSTEM, OR THE LIKE, ABOVE WHICH A PAVEMENT, EARTH, WALKS, ETC., ARE TO BE LAID. THE PRESENT MIXUTRE MAY BE USED ALONE AS IN LAYER FORM OR IN CONJUNCTION WITH AN ADJOINING LAYER OF WATER-SWELLABLE CLAY TO FORM A MULTI-LAYER BARRIER. OPTIONALLY, THE MIXTURE MAY INCLUDE A FINELY DIVIDED SILICEOUS MINERAL SUCH AS PERLITE AS AN ADDITIONAL INGREDIENT.
Inventors
- 👤 Robert N Olton
- 👤 Bernard C Berney
Bibliographic Details
Claims Analysis
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| 3.5 Years (Year 4) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
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