Macrokinetics of the deterioration of cement-based grouting material for predicting its service life under acid rain attack

Cement-based grouting material is widely used to reinforce the unsafe rock and control seepage of rock-carved relics although it is considered inappropriate in protection of ancient sites. As this approach is irreversible, a longer service life is desirable for the grouting material and methods to p...

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Bibliographic Details
Published in:Heritage science 2023-11, Vol.11 (1), p.239-11, Article 239
Main Authors: Hu, Wenjing, Fang, Shiqiang, Xie, Lina, Chen, Xueqiang, Zhang, Bingjian
Format: Article
Language:English
Subjects:
Acid rain
Ca2+ ion
Calcium ions
Cement
Chemistry and Materials Science
Cultural heritage
Grout
Grouting
Historic sites
Macrokinetics
Materials Science
Precipitation
Rain
Reaction rate constant
Seepage control
Service life
Stone
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Summary:Cement-based grouting material is widely used to reinforce the unsafe rock and control seepage of rock-carved relics although it is considered inappropriate in protection of ancient sites. As this approach is irreversible, a longer service life is desirable for the grouting material and methods to predict the service life are needed. Here we propose a universal formula based on the dissolved amount of calcium ion to predict the deterioration rate of cement-based grout caused by acid deposition in the laboratory. The experimental results showed that the dissolved amount of calcium ion had a linear relationship with ln T and the pH value, with better accuracy when the pH value was greater than 3.0. This work maybe could provide a facile and quantitative method to help us predict the service life of cement-based grouting material under acid rain attack outdoors.
ISSN:2050-7445
2050-7445
DOI:10.1186/s40494-023-01087-z