Impact of Accelerated Carbonation on Microstructure and Phase Assemblage
The paper summarizes preliminary results on characterization of the microstructure and phase assemblage of mortar and concrete samples containing Portland and Portland-fly ash cement carbonated at either natural conditions, 60% RH and 1% CO2, 90% RH and 5% CO2 or 60% RH and 100% CO2. Different chara...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Sciendo
2018-12-01
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| Series: | Nordic Concrete Research |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/ncr-2018-0018 |
| _version_ | 1818755012515332096 |
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| author | Revert Andres Belda De Weerdt Klaartje Jakobsen Ulla Hjorth Geiker Mette Rica |
| author_facet | Revert Andres Belda De Weerdt Klaartje Jakobsen Ulla Hjorth Geiker Mette Rica |
| author_sort | Revert Andres Belda |
| collection | DOAJ |
| description | The paper summarizes preliminary results on characterization of the microstructure and phase assemblage of mortar and concrete samples containing Portland and Portland-fly ash cement carbonated at either natural conditions, 60% RH and 1% CO2, 90% RH and 5% CO2 or 60% RH and 100% CO2. Different characterization techniques were used: thermogravimetric analysis to study the solid phases, SEM-EDS point analysis to investigate the chemical composition of the solid phases, optical microscopy to investigate the microstructure, and cold water extraction to characterize the chemical composition of the pore solution. The combined results on microstructure and phase assemblage indicate that carbonation up to 5% CO2 appears representative for natural carbonation. Pore solution analysis revealed similar trends for the three accelerated carbonation conditions. |
| first_indexed | 2024-12-18T05:32:23Z |
| format | Article |
| id | doaj.art-a24db9d0d3b642aeae3fd7ed0eb29e99 |
| institution | Directory Open Access Journal |
| issn | 2545-2819 |
| language | English |
| last_indexed | 2024-12-18T05:32:23Z |
| publishDate | 2018-12-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Nordic Concrete Research |
| spelling | doaj.art-a24db9d0d3b642aeae3fd7ed0eb29e992022-12-21T21:19:25ZengSciendoNordic Concrete Research2545-28192018-12-0159111112610.2478/ncr-2018-0018Impact of Accelerated Carbonation on Microstructure and Phase AssemblageRevert Andres Belda0De Weerdt Klaartje1Jakobsen Ulla Hjorth2Geiker Mette Rica3Norwegian University of Science and Technology (NTNU), Department of Structural Engineering Richard Birkelands vei 1 A, 7491. TrondheimNorwegian University of Science and Technology (NTNU),Department of Structural Engineering Richard Birkelands vei 1 A, 7491. TrondheimDanish Technological Institute (DTI) Concrete Centre Gregersensvej 4, DK 2630TaastrupNorwegian University of Science and Technology (NTNU), Department of Structural Engineering, Richard Birkelands vei 1 A, 7491. TrondheimThe paper summarizes preliminary results on characterization of the microstructure and phase assemblage of mortar and concrete samples containing Portland and Portland-fly ash cement carbonated at either natural conditions, 60% RH and 1% CO2, 90% RH and 5% CO2 or 60% RH and 100% CO2. Different characterization techniques were used: thermogravimetric analysis to study the solid phases, SEM-EDS point analysis to investigate the chemical composition of the solid phases, optical microscopy to investigate the microstructure, and cold water extraction to characterize the chemical composition of the pore solution. The combined results on microstructure and phase assemblage indicate that carbonation up to 5% CO2 appears representative for natural carbonation. Pore solution analysis revealed similar trends for the three accelerated carbonation conditions.https://doi.org/10.2478/ncr-2018-0018carbonationmicrostructuresolid phasespore solutionportland-fly ash cement |
| spellingShingle | Revert Andres Belda De Weerdt Klaartje Jakobsen Ulla Hjorth Geiker Mette Rica Impact of Accelerated Carbonation on Microstructure and Phase Assemblage Nordic Concrete Research carbonation microstructure solid phases pore solution portland-fly ash cement |
| title | Impact of Accelerated Carbonation on Microstructure and Phase Assemblage |
| title_full | Impact of Accelerated Carbonation on Microstructure and Phase Assemblage |
| title_fullStr | Impact of Accelerated Carbonation on Microstructure and Phase Assemblage |
| title_full_unstemmed | Impact of Accelerated Carbonation on Microstructure and Phase Assemblage |
| title_short | Impact of Accelerated Carbonation on Microstructure and Phase Assemblage |
| title_sort | impact of accelerated carbonation on microstructure and phase assemblage |
| topic | carbonation microstructure solid phases pore solution portland-fly ash cement |
| url | https://doi.org/10.2478/ncr-2018-0018 |
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