Suppression of pressure water absorption of lightweight aggregate by aqueous dispersion therein of anionic polymers
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United States of America Patent
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Sep 11, 1990
Grant Date -
N/A
app pub date -
Nov 2, 1987
filing date -
Nov 7, 1986
priority date (Note) -
Expired
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Abstract
A pressure water absorption inhibitor for lightweight aggregates which comprises an aqueous dispersion of a polymeric substance having a viscosity which permits the aqueous dispersion to enter the fine pores in the surface layer of a lightweight aggregate and which dispersion is capable of being thickened to a viscosity of not less than 50 times the viscosity before thickening by elevation of the pH.
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