发明名称 |
Waterstop |
摘要 |
The waterstop used to prevent passage or leakage of water through a construction joint of concrete is shaped of a plastic or rubber in the form of a continuous-length belt-like form and provided with a water-swellable rubbery layer on at least a portion, or, for example, along the peripheries of the belt-like form, side-by-side coming into contact with the concrete bodies to serve as a water-tight filling of the joint by being swollen with water. The water-swellable rubbery layer is protected temporarily prior to use with a coating film of an alkali-soluble polymeric material which can at least partially be dissolved away by the alkalinity of the water in the concrete joint. The peripheries of the plastic- or rubber-made belt-like form are preferably in a length-wise bulged form having a bore running therethrough to serve as a stress absorber when the water-swellable rubbery layer is swollen with water. The disclosure also includes a particularly preferred water-swellable rubbery composition formed of a matrix comprising an acrylonitrile-butadiene rubber, polyvinyl chloride resin and chlorinated polyethylene and a dispersed phase of a water-swellable crosslinked polymer.
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申请公布号 |
US4740404(A) |
申请公布日期 |
1988.04.26 |
申请号 |
US19860915738 |
申请日期 |
1986.10.06 |
申请人 |
C. I. KASEI, CO. LTD. |
发明人 |
OTSUGU, SHOZO;TERAUCHI, MICHIYOSHI;SASAYAMA, HIROHARU;ISHIHARA, YUJI;KUSHIDA, TAKASHI |
分类号 |
E01C11/10;E04B1/68;E04B1/684;(IPC1-7):B32B3/14;B32B27/08;E04C2/00;E04B1/62 |
主分类号 |
E01C11/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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