ORIGINAL RESEARCH article
Front. Mater.
Sec. Structural Materials
Volume 12 - 2025 | doi: 10.3389/fmats.2025.1626631
This article is part of the Research TopicAdvancing Eco-Friendly Construction: The Role of Biomass and Waste IntegrationView all 4 articles
Study on chloride ion resistance durability and mechanism of nano modified concrete sea sand mortar
Provisionally accepted
- School of Engineering, Fujian Jiangxia University, Fuzhou, China
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This study incorporated nanomaterials to modify traditional sea sand mortar to enhance the durability of marine infrastructure. It explored the effects of nano-silica (NS), nano-metakaolin (NMK), and nano-alumina (NA)) on the chloride binding capacity and microstructure of the sea sand mortar through potentiometric titration, X-ray diffraction (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The results indicated a significant enhancement in the chloride binding capacity of the nanomaterial-modified sea sand mortar. Both NS and NMK reduced Friedel's salt (FS) content in sea sand mortar while enhancing chloride binding capacity via increased physical adsorption. NA increased the FS content in sea sand mortar, thereby enhancing its chemical bonding capacity for chloride ions. Among these three nanomaterials, NMK demonstrated the best improvement in the pore structure of sea sand mortar, followed by NS. The research results provide an innovative material solution for marine engineering structures.
Keywords: nanomaterials, Sea sand mortar, Modification technique, Chloride binding capacity, microstructure
Received: 11 May 2025; Accepted: 17 Jun 2025.
Copyright: © 2025 Fan, Jin and Wu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Wei Fan, School of Engineering, Fujian Jiangxia University, Fuzhou, China
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