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In situ precipitation for the surface treatment and repair of cement-based materials

, , , &
Pages 1233-1240 | Received 27 Sep 2019, Accepted 12 Dec 2019, Published online: 23 Dec 2019
 

Abstract

A calcium oxalate-mineralized film was synthesized in situ on the surface of Portland-cement-based material, aimed at protecting the concrete against water penetration and to facilitate crack repair. Microanalysis results show that the homogeneously dense film was highly compatible with the cement paste, and its thickness increased with the increasing oxalic acid concentration. Additionally, the results demonstrate the film's high efficacy in water penetration of cement-based materials due to the improvement in its hydrophobicity. In addition, the formed calcium oxalate monohydrate can repair cracks in concrete. This would be a simple and effective method to improve durability of concrete structures.

Acknowledgment

They thank LetPub (www.letpub.com) for its linguistic assistance during the preparation of this manuscript.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The authors acknowledge the financial support from the National Natural Science Foundation of China [Grant Nos. 51538007, U1801254, and 51478270].

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