Exploring a feasible inhibitor-coating protective system for corrosion protection of steel in mortar

IF 10.8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Cement & concrete composites Pub Date : 2025-05-02 DOI:10.1016/j.cemconcomp.2025.106109

Yongqi Liu , Jinjie Shi

引用次数: 0

Abstract

This study aims to reduce the adverse effects of corrosion inhibitors on mortar performance while improving the corrosion resistance of steel in mortar exposed to chloride-bearing aggressive environments. To achieve this target, a novel inhibitor-coating protective system was designed, consisting of an admixed phytate corrosion inhibitor in mortar and a phytate-based smart protective coating on steel. The protective system operates through a synergistic inhibition mechanism, where phytate ions adsorb on the damaged regions of coating and interact with molybdate ions released from the coating to form a multilayer protective film, thereby significantly enhancing the corrosion resistance of steel. Moreover, the addition of phytate had no obvious impact on the mechanical properties of mortar, while the formed phytate-based complexes positively contributed to the mortar compactness by filling the pores and defects, providing additional corrosion protection against chloride attack for the embedded steel.

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探索一种可行的砂浆中钢的缓蚀剂-涂层防护体系

本研究旨在减少缓蚀剂对砂浆性能的不利影响，同时提高砂浆中钢在含氯侵蚀环境下的耐腐蚀性。为了实现这一目标，设计了一种新型的缓蚀剂-涂层防护体系，该体系由砂浆中添加植酸盐缓蚀剂和钢表面植酸盐智能防护涂层组成。该保护体系通过协同抑制机制，植酸盐离子吸附在涂层的损伤区域，与涂层释放的钼酸盐离子相互作用，形成多层保护膜，从而显著提高钢的耐蚀性。此外，植酸盐的加入对砂浆的力学性能没有明显的影响，而形成的植酸盐基配合物通过填充孔隙和缺陷，对砂浆的密实度有积极的贡献，为预埋钢提供了额外的抗氯化物侵蚀的腐蚀保护。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Cement & concrete composites 工程技术-材料科学：复合

CiteScore

18.70

自引率

11.40%

发文量

459

审稿时长

65 days

期刊介绍： Cement & concrete composites focuses on advancements in cement-concrete composite technology and the production, use, and performance of cement-based construction materials. It covers a wide range of materials, including fiber-reinforced composites, polymer composites, ferrocement, and those incorporating special aggregates or waste materials. Major themes include microstructure, material properties, testing, durability, mechanics, modeling, design, fabrication, and practical applications. The journal welcomes papers on structural behavior, field studies, repair and maintenance, serviceability, and sustainability. It aims to enhance understanding, provide a platform for unconventional materials, promote low-cost energy-saving materials, and bridge the gap between materials science, engineering, and construction. Special issues on emerging topics are also published to encourage collaboration between materials scientists, engineers, designers, and fabricators.