Effect of combined cations on chloride diffusion behavior in concrete

被引：6

作者：

Liu, Huanqiang ^{[1
]}

Yang, Xueqing ^{[2
]}

Jiang, Linhua ^{[3
]}

机构：

[1] North China Univ Water Resources & Elect Power, Sch Civil Engn & Transportat, Zhengzhou 450011, Peoples R China

[2] North China Univ Water Resources & Elect Power, Sch Informat Engn, Zhengzhou 450011, Peoples R China

[3] Hohai Univ, Coll Mech & Mat, Nanjing 210098, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2022年 / 339卷

基金：

中国国家自然科学基金;

关键词：

Combined cations; Chloride diffusion behavior; Diffusion source solution; Chloride corrosion; CEMENT-BASED MATERIALS; FUNDAMENTAL EQUATIONS; SALT-TYPE; IONS; TRANSPORTATION; CORROSION;

D O I：

10.1016/j.conbuildmat.2022.127669

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The effect of combined cations in diffusion source solutions on chloride diffusion behavior in concrete is unknown, and present research on the effect of combined cations on chloride diffusion behavior in concrete is insufficient. This paper uses natural diffusion experiment as research condition, and uses the concrete with water-binder ratio of 0.5 as research object to study the effect of chemical valence and combination relationship of cations in combined cations diffusion source solutions on chloride diffusion behavior in concrete. The results reveal that the higher the chemical valence of cations, the faster the chloride diffusion rate. When the combination relationship changes, cations with the same chemical valence have little effect on the chloride diffusion process; cations with different chemical valence have obvious effects on the chloride diffusion process. The higher the concentration of divalent cations in solutions, the lower the water-soluble chloride concentration, and the higher the acid-soluble chloride concentration. Divalent cation is favorable to the formation of Friedel's salt.

引用

页数：9

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