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BELITE-CALCIUM ALUMINATE AS AN ADDITIVE

SCHMITT DIRK / BEN HAHA MOHSEN / ITUL ANCA / SPENCER NICOLAS

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 min as an accelerator for Portland cement.

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BELITE-CALCIUM ALUMINATE AS AN ADDITIVE

SCHMITT DIRK / BEN HAHA MOHSEN / ITUL ANCA / SPENCER NICOLAS

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 min as an accelerator for Portland cement.

BELITE-CALCIUM ALUMINATE AS AN ADDITIVE

SCHMITT DIRK / BEN HAHA MOHSEN / ITUL ANCA / SPENCER NICOLAS

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 min as an accelerator for Portland cement.

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Titel:

BELITE-CALCIUM ALUMINATE AS AN ADDITIVE

Beteiligte:

SCHMITT DIRK (Autor:in) / BEN HAHA MOHSEN (Autor:in) / ITUL ANCA (Autor:in) / SPENCER NICOLAS (Autor:in)

Erscheinungsdatum:

21.04.2016

Medientyp:

Patent

Format:

Elektronische Ressource

Sprache:

Englisch

Klassifikation:

IPC: C04B Kalk , LIME

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