Chemo-Mechanical Model for the Expansion of Concrete due to Alkali Silica Reaction

authored by

Lianfang Sun, Xingji Zhu, Xiaoying Zhuang, Goangseup Zi

Abstract

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.

Organisation(s)

Institute of Continuum Mechanics

External Organisation(s)

Korea University
Harbin Institute of Technology
China University of Petroleum (East China)

Type

Article

Journal

Applied Sciences (Switzerland)

Volume

10

ISSN

2076-3417

Publication date

30.05.2020

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Materials Science(all), Instrumentation, Engineering(all), Process Chemistry and Technology, Computer Science Applications, Fluid Flow and Transfer Processes

Electronic version(s)

https://doi.org/10.3390/app10113807 (Access: Open)

 

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