Study on the diffusion of penetrating corrosion inhibitors - nitrite ions in concrete

被引：0

作者：

Krolikowski, Andrzej ^{[1
]}

Kuziak, Justyna ^{[2
]}

机构：

[1] Warsaw Univ Sci & Technol, Katedra Chem Nieorganicznej & Technol Ciala Stale, Warsaw, Poland

[2] Warsaw Univ Sci & Technol, Katedra Inzynierii Mat Budowlanych, Warsaw, Poland

来源：

OCHRONA PRZED KOROZJA | 2010年 / 53卷 / 06期

关键词：

nitrite ion; concrete; diffusion coefficient; carbonation;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Calcium nitrite is promoted as a penetrating corrosion inhibitor for steel in concrete structures and transport characteristics of this inhibitor in concrete are crucial for its efficiency. The diffusion of nitrite ions was studied in noncarbonated and carbonated concrete of different w/c ratio. The diffusion coefficient D was determined upon the rate of passing of nitrite ions through the concrete membrane as well as upon the nitrite distribution in concrete membrane after completing the test. Larger values of D were observed for concrete samples with higher w/c ratio and after carbonation. Possible explanations of this latter effect are given.

引用

页码：316 / 318

页数：3

共 9 条

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