Title
Lithium migration in a two-chamber set-up as treatment against expansion due to alkali–silica reaction
Author
Souza, L.M.S.
Polder, R.B.
Çopuroğlu, O.
Publication year
2017
Abstract
Alkali–silica reaction (ASR) affects numerous concrete structures worldwide. However, the intervention options for ASR in existing structures are limited. Lithium is proposed to suppress expansion. In this paper, an investigation on two-chamber lithium migration as treatment against ASR is presented. First, the influence of different levels of ASR development on lithium migration is studied. Results show that ASR development, if not followed by enough crack formation, hinders migration due to increase in resistivity. Second, the effects of different treatments, such as sodium and potassium removal, lithium migration (combined with the associated sodium and potassium removal) and lithium diffusion, on ASR expansion were evaluated. Lithium migration led to the lowest post-treatment expansion levels. © 2016 Elsevier Ltd
Subject
Fluid & Solid Mechanics
SR - Structural Reliability
TS - Technical Sciences
Buildings and Infrastructures
Architecture and Building
2015 Urbanisation
Alkali–silica reaction (ASR)
Concrete
Lithium
Migration
Treatment
To reference this document use:
http://resolver.tudelft.nl/uuid:b421af9c-1e45-4b9b-8bcc-a597b7fdce91
DOI
https://doi.org/10.1016/j.conbuildmat.2016.12.052
TNO identifier
575680
Publisher
Elsevier Ltd
ISSN
0950-0618
Source
Construction and Building Materials, 134, 324-335
Document type
article