Original Message:   Industry Associations

What about contacting industry associations and organizations, such as the below, to see if they have suggestions: http://www.societyofconcretepetrographers.org/ https://www.concrete.org/ re. ACI, I'd ask to speak to a technical rep. Perhaps the beads are made of natural cement or clay (that has cementitious properties)? Both would produce materials that, because of impurities, would be much weaker than plant-produced concrete. Copyright 2024 All rights reserved by Bead Collector Network and its users

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