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The Natural Pozzolan Association is a network of natural pozzolan producers working to improve the performance and durability of the nation’s concrete …
Frequently asked questions
Q:
What are Natural Pozzolans (NPs)?
A:
There are two types of NP–Raw and Calcined. Most raw NPs are derived from magmatic sources such as pumice, pumicite, tuff, volcanic ash, and perlite...
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