Proposing a New Approach for Qualification of Natural Pozzolans


1 Department of Civil Engineering,Tarbiat Modares University

2 Department of Civil Engineering,Building and Housing Research Center


Recognizing natural pozzolans and their qualities is one of the most important dilemmas in
the field of cement and concrete. Although di erent methods have been published towards this aim, research
shows some anomalies between the judgments of these methods. This paper aims to compare evaluation
methods of natural pozzolans by considering their performance in concrete as a decision criterion in order
to develop a guideline for their quali cation. Therefore, rstly, the main available methods are described.
Then, the pozzolanic activity of natural pozzolans is investigated using these methods and compared with
the performance in concrete. Finally, a guideline is proposed, based on the discussed methods.