Durability of Concrete Containing Natural Pozzolans
Reclamation has used natural pozzolans for large dams in the past. Trends in the market made fly ash a more preferable choice as a supplementary cementitious materials for decades. As the future supply of fly ash becomes less predictable, concrete producers are more interested in other pozzolans including natural pozzolans. This report summarized Reclamation's history with using natural pozzolans and proposes sites to extract cores to assess the long-term durability of concrete made with calcined shales.
Need and Benefit
The objective of this research is to determine the long-term durability of Reclamation structures that have been built with concrete that used natural pozzolans as a supplementary cementitious material.
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Bureau of Reclamation Review
The following documents were reviewed by experts in fields relating to this project's study and findings. The results were determined to be achieved using valid means.
Durability of Concrete Containing Natural Pozzolans (final, PDF, 1.9MB)
By Catherine Lucero, Shannon Harrell
Report completed on September 30, 2021