What is the chemical composition of the clay used to make cement?

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Offline rakes12

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I am looking for Information on the chemical makeup of Clay that is usefull for cement production.  Specifically I would like to know what percentage of the clay needs to be
Aluminum
Iron
Silicon
Sodium
and Potassium

I have some samples and I need to to know if they are useful or waste.

Any information would be useful

Thank You
« Last Edit: 11/04/2009 20:42:55 by chris »

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Offline Bored chemist

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I don't know, but I think there will be quite a bit of leeway on this.
My guess is that you can alter the ratio of the other things you add to get an acceptable cement from a wide variety of clay types.
Is there any factory near you that makes cement? If so you might as well ask them if they can use the clay you have.
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