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Damage of high-water quick-setting material exposed to chlorine salt solutions under dry-wet cycles

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Abstract

The durability of the grouting material is of most importance to the safety of engineering practice. In this study, the strength degradation and failure process of the high-water quick-setting material (HWQSM) exposed to two kinds of chlorine salt solutions (5% sodium chloride solution and 5% magnesium chloride solution) under dry-wet cycles were investigated. The micro-structure and composition of HWQSM were analyzed by SEM and XRD, respectively. The results show that the deterioration rate of HWQSM increases due to the existence of magnesium ions in magnesium chloride solution. Corrosion layer and intact layer of samples are observed after dry-wet cycles. The quantity of ettringite (AFt), the main component of the HWQSM, reduces and can be compensated by wetting process. Compared with MgCl2 solution, NaCl solution shows a better compensation effect. However, the damage of HWQSM cannot be offset through such compensation effect. The results provide theoretical guidance for the rational use of HWQSM under the conditions containing chlorine salt solutions.

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Acknowledgements

This research was funded by the National Natural Science Foundation of China (grant no. 51604006).

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Authors

Contributions

Xianliang Zhou: conceptualization, writing—original draft, investigation. Changwu Liu: methodology, data curation. Writing—review & editing. Yang Liu: funding acquisition, resources.

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Correspondence to Changwu Liu.

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The authors declare no competing interests.

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Responsible Editor: Helder I. Chaminé

This article is part of the Topical Collection on Hydrogeomechanics Role in Large Civil and Mining Projects

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Zhou, X., Liu, C. & Liu, Y. Damage of high-water quick-setting material exposed to chlorine salt solutions under dry-wet cycles. Arab J Geosci 14, 1460 (2021). https://doi.org/10.1007/s12517-021-07913-7

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  • DOI: https://doi.org/10.1007/s12517-021-07913-7

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