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Assessment of Alkali-Silica Reaction Development in High Limestone Replacement Portland-Limestone Mortar and Concrete
https://orcid.org/http://orcid.org/0009-0000-5063-1079
https://orcid.org/http://orcid.org/0000-0002-7821-9155
https://orcid.org/http://orcid.org/0000-0002-2449-5111
In the current need to offset greenhouse gas emissions, interground Portland Limestone Cement (PLC) emerges as a viable sustainable alternative, offering the potential to reduce clinker content. However, the durability of employed PLC, especially with high limestone fillers (LFs) replacement ratios exceeding 15%, requires detailed investigation. Durability concerns, notably in relation to sulphate attack and steel corrosion, remain unresolved, though the reduced pH due to LFs addition in PLC could help mitigating alkali-silica reaction (ASR). In this context, this work evaluates ASR development in concrete mixtures incorporating PLC with interground LFs ratios of 15%, 20%, and 25%. Analysis of expansion over from accelerated mortar bar (AMBT) and concrete prism tests (CPT) reveal that a replacement ratio of up to 25% does not significantly impact ASR-induced expansion. This finding highlights the potential of PLC for sustainable construction without compromising durability regarding ASR.
Assessment of Alkali-Silica Reaction Development in High Limestone Replacement Portland-Limestone Mortar and Concrete
https://orcid.org/http://orcid.org/0009-0000-5063-1079
https://orcid.org/http://orcid.org/0000-0002-7821-9155
https://orcid.org/http://orcid.org/0000-0002-2449-5111
In the current need to offset greenhouse gas emissions, interground Portland Limestone Cement (PLC) emerges as a viable sustainable alternative, offering the potential to reduce clinker content. However, the durability of employed PLC, especially with high limestone fillers (LFs) replacement ratios exceeding 15%, requires detailed investigation. Durability concerns, notably in relation to sulphate attack and steel corrosion, remain unresolved, though the reduced pH due to LFs addition in PLC could help mitigating alkali-silica reaction (ASR). In this context, this work evaluates ASR development in concrete mixtures incorporating PLC with interground LFs ratios of 15%, 20%, and 25%. Analysis of expansion over from accelerated mortar bar (AMBT) and concrete prism tests (CPT) reveal that a replacement ratio of up to 25% does not significantly impact ASR-induced expansion. This finding highlights the potential of PLC for sustainable construction without compromising durability regarding ASR.
Assessment of Alkali-Silica Reaction Development in High Limestone Replacement Portland-Limestone Mortar and Concrete
https://orcid.org/http://orcid.org/0009-0000-5063-1079
https://orcid.org/http://orcid.org/0000-0002-7821-9155
https://orcid.org/http://orcid.org/0000-0002-2449-5111
In the current need to offset greenhouse gas emissions, interground Portland Limestone Cement (PLC) emerges as a viable sustainable alternative, offering the potential to reduce clinker content. However, the durability of employed PLC, especially with high limestone fillers (LFs) replacement ratios exceeding 15%, requires detailed investigation. Durability concerns, notably in relation to sulphate attack and steel corrosion, remain unresolved, though the reduced pH due to LFs addition in PLC could help mitigating alkali-silica reaction (ASR). In this context, this work evaluates ASR development in concrete mixtures incorporating PLC with interground LFs ratios of 15%, 20%, and 25%. Analysis of expansion over from accelerated mortar bar (AMBT) and concrete prism tests (CPT) reveal that a replacement ratio of up to 25% does not significantly impact ASR-induced expansion. This finding highlights the potential of PLC for sustainable construction without compromising durability regarding ASR.
Assessment of Alkali-Silica Reaction Development in High Limestone Replacement Portland-Limestone Mortar and Concrete
RILEM Bookseries
Sanchez, Leandro F.M. (editor) / Trottier, Cassandra (editor) / Xia, Zichun (author) / Bergmann, Ana (author) / Sanchez, Leandro (author)
International Conference on Alkali-Aggregate Reaction in Concrete ; 2024 ; Ottawa, ON, Canada
Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete ; Chapter: 82 ; 710-717
RILEM Bookseries ; 50
2024-05-06
8 pages
Article/Chapter (Book)
Electronic Resource
English
Alkali-silica Reaction (ASR) , interground Portland-limestone Cement (PLC) , accelerated mortar bar test (AMBT) , concrete prism test (CPT) , limestone fines (LFs) Engineering , Building Materials , Building Repair and Maintenance , Structural Materials , Industrial Chemistry/Chemical Engineering , Geochemistry
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