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

Applied Sciences

Xingji Zhu¹  Xiaoying Zhuang²  Goangseup Zi³  Lianfang Sun³ 

[1] Department of Civil Engineering, Harbin Institute of Technology at Weihai, Cultural West Road, Weihai 264209, China;Institute of Continuum Mechanics, Leibniz Universität Hannover, Appelstr. 11, 30167 Hannover, Germany;School of Civil, Environmental & Architectural Engineering, Korea University, 145 An-Am Ro, Sung-Buk Gu, Seoul 02841, Korea;

关键词: alkali silica reaction;    numerical modeling;    durability;    concrete;   

DOI  :  10.3390/app10113807

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown