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Adding Cremains? Answered

Hi Mike. I'd like to make a smallish memorial stone for my mom incorporating her ashes. I understand cremains are alkaline, however. (Enough so to harm any plants they may be buried under, hence my desire for a "stone" instead.) How, if at all, should I account for this extra alkalinity in my concrete mix?

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mikeasaurusBest Answer (author)2017-05-18

I don't believe adding more of a alkaline substance would have much impact on the properties of the concrete. I would use the ashes sparingly as to not dry out the mix too much. You could always perform a test casting using wood ash to get the ratio right if you have doubts.

I think that's a wonderful project idea. I'd love to see a picture when you're finished.

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Geo-instructables (author)2017-07-14

Have you considered a stone with a void? Or a chest? You could place the ashes in the void and seal it afterwards. Just a thought.

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