A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Performance and Hydration of Composite Cements with Carbonated, Recycled Concrete Paste
https://orcid.org/http://orcid.org/0000-0003-3135-9465
https://orcid.org/http://orcid.org/0000-0003-1534-4466
https://orcid.org/http://orcid.org/0000-0002-6835-0096
https://orcid.org/http://orcid.org/0000-0002-0105-804X
https://orcid.org/http://orcid.org/0000-0001-7570-326X
Hydration reactions and performance evolution of composite cements containing carbonated recycled concrete paste (cRCP) as a new supplementary cementitious material are investigated. The focus is on the effect of the origin of the concrete paste and type of cement clinker used to produce the composite cement.
Alumina-silica gel being the main component of the carbonated paste is characterized by the pozzolanic properties. The rate of the pozzolanic reaction is very high. Already after one day, a high reaction was achieved followed by a close to complete reaction of the carbonated paste within 28 days under the conditions applied in this study. The fine microstructure formed in the presence of the cRCP results in a significant increase of the compressive strength. The initial characteristics of the paste are determining the content of the carbonatable material, content of the gel formed and finally its impact on the hydration and evolution of the mechanical performance. The mechanisms of reaction are independent of the characteristics. The characteristics of the cement clinker impact the reaction and the effect of CRP on performance evolution to a limited extend.
Performance and Hydration of Composite Cements with Carbonated, Recycled Concrete Paste
https://orcid.org/http://orcid.org/0000-0003-3135-9465
https://orcid.org/http://orcid.org/0000-0003-1534-4466
https://orcid.org/http://orcid.org/0000-0002-6835-0096
https://orcid.org/http://orcid.org/0000-0002-0105-804X
https://orcid.org/http://orcid.org/0000-0001-7570-326X
Hydration reactions and performance evolution of composite cements containing carbonated recycled concrete paste (cRCP) as a new supplementary cementitious material are investigated. The focus is on the effect of the origin of the concrete paste and type of cement clinker used to produce the composite cement.
Alumina-silica gel being the main component of the carbonated paste is characterized by the pozzolanic properties. The rate of the pozzolanic reaction is very high. Already after one day, a high reaction was achieved followed by a close to complete reaction of the carbonated paste within 28 days under the conditions applied in this study. The fine microstructure formed in the presence of the cRCP results in a significant increase of the compressive strength. The initial characteristics of the paste are determining the content of the carbonatable material, content of the gel formed and finally its impact on the hydration and evolution of the mechanical performance. The mechanisms of reaction are independent of the characteristics. The characteristics of the cement clinker impact the reaction and the effect of CRP on performance evolution to a limited extend.
Performance and Hydration of Composite Cements with Carbonated, Recycled Concrete Paste
https://orcid.org/http://orcid.org/0000-0003-3135-9465
https://orcid.org/http://orcid.org/0000-0003-1534-4466
https://orcid.org/http://orcid.org/0000-0002-6835-0096
https://orcid.org/http://orcid.org/0000-0002-0105-804X
https://orcid.org/http://orcid.org/0000-0001-7570-326X
Hydration reactions and performance evolution of composite cements containing carbonated recycled concrete paste (cRCP) as a new supplementary cementitious material are investigated. The focus is on the effect of the origin of the concrete paste and type of cement clinker used to produce the composite cement.
Alumina-silica gel being the main component of the carbonated paste is characterized by the pozzolanic properties. The rate of the pozzolanic reaction is very high. Already after one day, a high reaction was achieved followed by a close to complete reaction of the carbonated paste within 28 days under the conditions applied in this study. The fine microstructure formed in the presence of the cRCP results in a significant increase of the compressive strength. The initial characteristics of the paste are determining the content of the carbonatable material, content of the gel formed and finally its impact on the hydration and evolution of the mechanical performance. The mechanisms of reaction are independent of the characteristics. The characteristics of the cement clinker impact the reaction and the effect of CRP on performance evolution to a limited extend.
Performance and Hydration of Composite Cements with Carbonated, Recycled Concrete Paste
RILEM Bookseries
Jędrzejewska, Agnieszka (editor) / Kanavaris, Fragkoulis (editor) / Azenha, Miguel (editor) / Benboudjema, Farid (editor) / Schlicke, Dirk (editor) / Zajac, Maciej (author) / Skibsted, Jørgen (author) / Ullrich, Patrick (author) / Skocek, Jan (author) / Haha, Mohsen Ben (author)
International RILEM Conference on Synergising expertise towards sustainability and robustness of CBMs and concrete structures ; 2023 ; Milos Island, Greece
2023-06-09
11 pages
Article/Chapter (Book)
Electronic Resource
English
| Taylor & Francis Verlag | 2024