A chemo-damage model is proposed to predict the expansion caused by the alkali silica reaction (ASR). The model covers the formation of the pre-expansion gel driven by alkali and the swelling of the gel driven by water. The swelling capacity of the ASR gel is quantified by the sodium to calcium ratio in the pore solution. The bound alkali in the gel recycled by calcium is also considered in this model. Both external alkali supply and internal alkali released from aggregates are included. Several sets of experimental data are compared with the simulation results for the verification of the model.
Bibliographical noteFunding Information:
Funding: This research was supported by a grant (20CTAP-C152291-02) from Technology Advancement Research Program funded by Ministry of Land, Infrastructure and Transport of Korean government. The first author would like to acknowledge the support of the China Scholarship Council (CSC201606450022).
© 2020 by the authors.
- Alkali silica reaction
- Numerical modeling
ASJC Scopus subject areas
- General Materials Science
- General Engineering
- Process Chemistry and Technology
- Computer Science Applications
- Fluid Flow and Transfer Processes