re SHALE AS ADDITIVE

What are the test to be used inorder to know the type of shale that we do have?

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re SHALE AS ADDITIVE

Hello Norew,

This paper claims that the best calcination temperature is 700 - 800deg

http://www.scientific.net/AMM.174-177.843

However, I suspect that the best temperature is related to the type of shale used and would have to be determined/confirmed experimentally in each individual case. Tests would include pozzolanic activity, setting times, mortar strengths and normal consistency.

 Some more practical information can be found here;-

 http://en.howtopedia.org/wiki/Pozzolanas_-_Calcined_Clays_and_Shales,_and_Volcanic_Ash_-_Technical_Brief

Regards,

Ted.

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