Corrosion behavior of steel reinforcement in magnesium silicate hydrate (M-S-H) concrete

IF 10.9 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Cement and Concrete Research Pub Date : 2025-03-12 DOI:10.1016/j.cemconres.2025.107858

Dan Meng, En-Hua Yang, Shunzhi Qian

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引用次数: 0

Abstract

Magnesium silicate hydrate (M-S-H) binder has been considered a promising alternative binder for engineering application. However, its low pH environment raises concerns for its adoption in steel reinforced concrete structures. To evaluate the corrosion behavior of steel reinforced M-S-H system under ambient and chloride environments, electrochemical tests were conducted. Additionally, phase formation, microstructure development, pore structure and solution chemistry were evaluated to better understand the corrosion mechanism. Corrosion resistance of the tested M-S-H system subjected to ambient environment was higher than that of the PC system because of significantly higher impedance of the bulk matrix, which was attributed to lower internal moisture, finer pore structure and lower conductivity of the pore solution in the M-S-H system. When subjected to cyclic chloride immersion, the M-S-H system exhibited higher corrosion rate, which was mainly due to its low pH and more electrolyte available on the steel surface.

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来源期刊

Cement and Concrete Research 工程技术-材料科学：综合

CiteScore

20.90

自引率

12.30%

发文量

318

审稿时长

53 days

期刊介绍： Cement and Concrete Research is dedicated to publishing top-notch research on the materials science and engineering of cement, cement composites, mortars, concrete, and related materials incorporating cement or other mineral binders. The journal prioritizes reporting significant findings in research on the properties and performance of cementitious materials. It also covers novel experimental techniques, the latest analytical and modeling methods, examination and diagnosis of actual cement and concrete structures, and the exploration of potential improvements in materials.