Title:
Tailoring Calcined Impure Clays for Improved Performance
Author(s):
Katelyn O'Quinn
Publication:
Web Session
Volume:
Issue:
Appears on pages(s):
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DOI:
Date:
10/17/2021
Abstract:
Moderate purity clays have shown promise as supplementary cementitious materials (SCMs) due to their vast geological reserves and low cost. This study investigates the reactivity of calcined clays sourced from across North America, including East, West, and Central locations, with varying mineral compositions and quality. The clays were tested using chemical reactivity methods to assess the impact of clay quality. The results show that composition and quality are important in the assessment of natural SCMs and that the sourced moderate purity calcined clays are pozzolanic and may offer significant benefits as SCMs.