Method of Producing Portland Cement Having Electrical Conduction and Optical Properties
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United States of America Patent
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Issued Date -
Sep 3, 2009
app pub date -
Nov 10, 2006
filing date -
Nov 11, 2005
priority date (Note) -
Abandoned
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Abstract
A method of producing conductive and/or translucent Portland cement which has high sulphate resistance and a service life of up to 70 years under normal service conditions. Once cement has set, light can pass therethrough. Up to 70% of the final resistance of the cement is reached within 48 hours of setting. The inventive production method is characterised in that it produces a fineness of more than 3450 cm2/g and in that, upon setting, the concrete has a mechanical strength of between 26 MPa and 250 MPa, without the addition of additives, thereby enabling a reduction in the water required to obtain a determined slump.
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