Multiple layer composite material consisting of cement-bound concrete and polymer-bound concrete and method for producing the same
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United States of America Patent
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Sep 14, 2004
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N/A
app pub date -
Mar 15, 2002
filing date -
Sep 15, 1999
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Abstract
The present invention relates to a multiple layer composite material and to a method for producing the same. Said multiple layer composite material has at least one layer of cement-bound concrete and at least one layer of polymer-bound concrete. The transition between adjacent layers of cement-bound concrete and polymer-bound concrete has at least the material strength of the less stable one of the concrete layers adjoining the transition. The layer of polymer-bound concrete allows the diffusion of water vapor, but does not allow liquid water to penetrate. The multiple layer composite material can be produced completely in an aqueous system.
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