Alisa Machner (Author), Marie Helene Bjørndal (Author), Harald Justnes (Author), Lucija Hanžič (Author), Aljoša Šajna (Author), Yushan Gu (Author), Benoit Bary (Author), Mohsen Ben Haha (Author), Mette R. Geiker (Author), Klaartje De Weerdt (Author)

Abstract

Mortar specimens were exposed to either a 3% NaCl solution or a 3% NaCl+KOH solution for up to 180 days. Exposure to the NaCl solution provoked much more leaching than the NaCl+KOH exposure. Leaching strongly impacted the chloride ingress profiles. The extended leaching led to a maximum total chloride content almost three times higher and a deeper chloride penetration than exposure with limited leaching after 180 days. The higher maximum chloride content seems to be linked to the enhanced binding capacity of the C-S-H and AFm phases upon moderate leaching as determined by SEM-EDS. The total chloride profile appears to be governed by multi-ion transport and the interaction of chloride with the hydration phases. Service life prediction and performance testing both rely on total chloride profiles and therefore ought to take these interactions into account.

Keywords

vezanje kloridov;Friedlova sol;Kuzelova sol;ph;GEMS;termodinamično modeliranje;odprti dostop;chloride binding;Friedel's salt;Kuzel's salt;thermodynamic modelling;open access;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: ZAG - Slovenian National Building and Civil Engineering Institute
Publisher: Pergamon Press
UDC: 620.1/.2
COBISS: 94335747 Link will open in a new window
ISSN: 0008-8846
Views: 32
Downloads: 28
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Other data

Secondary language: Slovenian
Secondary keywords: vezanje kloridov;Friedlova sol;Kuzelova sol;ph;GEMS;termodinamično modeliranje;odprti dostop;
Source comment: Št. članka: 106691;
Pages: str. 1-22
Issue: ǂVol. ǂ153
Chronology: Mar. 2022
DOI: 10.1016/j.cemconres.2021.106691
ID: 18721695