Cement-based powdered water-repellent composition, and its applications
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United States of America Patent
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Oct 21, 1980
Issued Date -
N/A
app pub date -
Jul 20, 1979
filing date -
Aug 3, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to a cement-based powdered water-repellent composition, comprising, expressed as dry weight: (a) 20-60% of a cement, (b) 30-70% of an inorganic or organic filler, (c) 2-10% of a fibre selected from zirconium, hafnium, vanadium and cesium silicate fibres, (d) 0.2-1% of plasticizers for cement, (e) 1-3% of an adhesive, (f) 0.1-0.5% of a water-repellent. This composition is useful for the production of coatings and molded products, having very high mechanical strength and water-repellent properties. This composition may additionally contain 0.1-2% alkalinity-reducing buffer salts.
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