THE EFFECT OF MACROCELLS BETWEEN ACTIVE AND PASSIVE AREAS OF STEEL REINFORCEMENTS

被引：90

作者：

ANDRADE, C ^{[1
]}

MARIBONA, IR ^{[1
]}

FELIU, S ^{[1
]}

GONZALEZ, JA ^{[1
]}

FELIU, S ^{[1
]}

机构：

[1] CSIC,NATL CTR MET RES,E-28040 MADRID,SPAIN

来源：

CORROSION SCIENCE | 1992年 / 33卷 / 02期

关键词：

D O I：

10.1016/0010-938X(92)90148-V

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of macrocells formed between active (depassivated) and passive areas on the corrosion rate of steel reinforcements in concrete beams and slabs are studied. With a uniform distribution of current lines on the electrodes, the anodic current density (i.e. the corrosion rate) is a function of the difference in potential, ohmic resistance and polarization resistance. This case is approached when passive and active reinforcements are placed opposite each other. A coplanar location of the anode and cathode areas on the reinforcements results in a non-uniform distribution of the current. These cells are modelled by means of a transmission line circuit. A reasonable concordance is obtained between the theoretical predictions and the experimental data.

引用

页码：237 / 249

页数：13

共 10 条

[1]

ANDRADE C, IN PRESS

[2] ON-SITE DETERMINATION OF THE POLARIZATION RESISTANCE IN A REINFORCED-CONCRETE BEAM [J].