Tephra® (Pozzolan)


CR Minerals offers several grades of Tephra® to serve the construction and oil and gas industries as a natural pozzolan. Tephra® has been tested, proven, and certified as a natural pozzolan in accordance with ASTM C618N. CR Minerals’ pozzolans are among the most effective products available to protect concrete from the deleterious effects of chemical attack and will also enhance compressive strengths.

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Please contact Gary Peacock for more information on CR Minerals pumice products.

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