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Impact of Accelerated Carbonation on Microstructure and Phase Assemblage

Autor(en): (Norwegian University of Science and Technology (NTNU) , Department of Structural Engineering Richard Birkelands vei 1 A, 7491 . Trondheim)
(Norwegian University of Science and Technology (NTNU), Department of Structural Engineering Richard Birkelands vei 1 A, 7491 . Trondheim)
(Danish Technological Institute (DTI) Concrete Centre Gregersensvej 4, DK 2630 Taastrup)
(Norwegian University of Science and Technology (NTNU) , Department of Structural Engineering , Richard Birkelands vei 1 A, 7491 . Trondheim)
Medium: Fachartikel
Sprache(n): Englisch
Veröffentlicht in: Nordic Concrete Research, , n. 1, v. 59
Seite(n): 111-126
DOI: 10.2478/ncr-2018-0018
Abstrakt:

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.

Structurae kann Ihnen derzeit diese Veröffentlichung nicht im Volltext zur Verfügung stellen. Der Volltext ist beim Verlag erhältlich über die DOI: 10.2478/ncr-2018-0018.
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  • Reference-ID
    10705858
  • Veröffentlicht am:
    19.02.2023
  • Geändert am:
    19.02.2023
 
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