Durability Performance of Blended Cement with Calcined Illitic Shale
The use of calcined clays in cement (kaolinitic and common calcined clays) introduces challenges due to the high alumina content, large specific surface area, and high-alkali content. This paper examines the performance against sulfate attacks, alkali-silica reactions, and chloride penetration in mixtures with calcined illitic shale (CIS). Replacement of high and moderate alkali content cement with 25% CIS significantly reduces the expansion in the alkali-silica reaction (ASR) test, as the pozzolanic reaction contributes to the combination of alkalis. Replacing 20% white portland cement with CIS allows the formulation of sulfate-resistant cement by limiting the formation of gypsum and ettringite. The incorporation of 25% CIS in concrete does not significantly increase chloride ingress. Therefore, blended cements with replacement levels of 20 to 25% of portland cement by CIS reduce or maintain the performance against ASR, sulfate attack, and chloride penetration.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
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Supplemental Notes:
- © 2022, American Concrete Institute. Abstract reprinted with permission from the American Concrete Institute.
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Authors:
- Cordoba, G P
- Rossetti, A
- Zito, S V
- Rahhal, V F
- Falcone, D
- Irassar, E F
- Publication Date: 2022-1
Language
- English
Media Info
- Media Type: Web
- Pagination: pp 135-144
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Serial:
- ACI Materials Journal
- Volume: 119
- Issue Number: 1
- Publisher: American Concrete Institute (ACI)
- ISSN: 0889-325X
- Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx
Subject/Index Terms
- TRT Terms: Alkali silica reactions; Calcined aggregates; Durability; Illites; Shale; Sulfate resisting cement
- Subject Areas: Bridges and other structures; Materials; Pavements; Transportation (General);
Filing Info
- Accession Number: 01856440
- Record Type: Publication
- Files: TRIS
- Created Date: Aug 29 2022 9:27AM