Belite-calcium aluminate as an additive

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United States of America Patent

PATENT NO 9604879
APP PUB NO 20160107933A1
SERIAL NO

14787006

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Abstract

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The present invention relates to the use of a belite calcium aluminate obtainable in a method comprising the following steps:

    a) providing a starting material that has a molar Ca/(Si+Al+Fe) ratio from 1.0 to 3.5 and a molar Al/Si ratio from 100 to 0.1,b) mixing the raw materials,c) hydrothermal treating of the starting material mixture produced in step b) in an autoclave at a temperature from 100 to 300° C. and a residence time from 0.1 to 24 h, wherein the water/solids ratio is 0.1 to 100,d) tempering the intermediate product obtained in step c) at 350 to 600° C., wherein the heating rate is 10-6000° C./min and the residence time is 0.01-600 minas an accelerator for Portland cement.

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Patent Owner(s)

Patent OwnerAddress
HSUSTAINABILITY GMBHBERLINER STRASSE 6 HEIDELBERG 69120

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ben, Haha Mohsen Heidelberg, DE 30 75
Itul, Anca Heidelberg, DE 5 15
Schmitt, Dirk Leimen, DE 22 163
Spencer, Nicolas Malsch, DE 5 15

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