Water-swellable caulking material for water-leakage prevention

Details Water-swellable caulking material for water-leakage prevention Water-swellable caulking material for water-leakage prevention

1985-04-08

1988-07-12

Kittle, John E.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428501, 428517, 428520, 428522, 428913, B32B 702

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047569522

ABSTRACT:
The inventive water-swellable caulking material for water-leakage prevention is of the type formed of a composition comprising a rubbery polymer and a highly water-absorptive resin and useful in the caulking works of a construction joint of concrete. Different from the conventional caulking materials of the type, the inventive caulking material is provided on the surface of a shaped body of the water-swellable composition with a coating film which is impervious to neutral water but exhibits water-permeability when contacted with an alkaline water of an alkalinity such as in an uncured concrete mixture so that the caulking material is prevented from premature or untimely expansion by swelling even when inadvertently contacted with water prior to application to the working site but capable of promptly expanding when contacted with an uncured concrete mixture with alkalinity.

REFERENCES:
patent: 4386172 (1983-05-01), Yoshioka

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