Open AccessEffects of temperature on expansion of concrete due to the alkali-silica reaction: A simplified numerical approach
Author(s) -
Yuichiro Kawabata,
Cyrille F. Dunant,
S. Nakamura,
Kazuo Yamada,
Takashi Kawakami
Publication year - 2022
Publication title -
materiales de construcción
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.539
H-Index - 30
eISSN - 1988-3226
pISSN - 0465-2746
DOI - 10.3989/mc.2022.17121
Subject(s) - alkali–silica reaction , alkali–aggregate reaction , materials science , viscoelasticity , aggregate (composite) , expansion ratio , numerical analysis , composite material , thermal expansion , numerical models , computer simulation , structural engineering , mechanics , mathematics , engineering , mathematical analysis , physics
The effects of temperature on the expansion behavior of concrete due to the alkali-silica reaction (ASR) were assessed through a simplified numerical analysis. Numerical models were constructed based on findings from a literature review. A simplified damage model was implemented to capture interactions between the viscoelasticity of the ASR gel and microstructural damage of the aggregate and paste. The parameters of the damage model were identified by fitting the simulated results to the experimental data. The results indicate that for a given reaction ratio, expansion ability is reduced at higher temperatures during the early and late stages of expansion. The results demonstrate that explicit modeling of chemo-mechanical interactions is important to achieve accurate numerical predictions of expansion behavior.