A Preliminary Study on Cathodic Prevention in Reinforced Mortar

被引：2

作者：

Koleva, D. A. ^{[1
,2
]}

van Breugel, K. ^{[1
,2
]}

Mol, J. M. C. ^{[1
,3
]}

de Wit, J. H. W. ^{[1
,3
]}

机构：

[1] Delft Univ Technol, NL-2600 AA Delft, Netherlands

[2] Fac Civil Engn & Geosci, Dep Mat & Environm, NL-2628 CN Delft, Netherlands

[3] Fac 3mE, Dep Mat Sci & Engn, NL-2628 CD Delft, Netherlands

来源：

CORROSION (GENERAL) - 216TH ECS MEETING | 2010年 / 25卷 / 37期

关键词：

ELECTROCHEMICAL-BEHAVIOR; MICROSTRUCTURAL ANALYSIS; PROTECTION; CORROSION; CONCRETE; STEEL;

D O I：

10.1149/1.3407550

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This work presents the preliminary tests on the performance of cathodic prevention (CPre) in reinforced mortar, subjected to aggressive (10% NaCl environment). Cathodic prevention is an electrochemical technique for minimizing, actually "preventing" any eventual corrosion of the steel bars in reinforced concrete. Therefore, the main objective of this investigation is to monitor the performance of cathodic prevention (CPre) as an alternative of cathodic protection (CP) i.e. application before corrosion initiation, using low cathodic current densities (1 to 2.5 mA/m(2) steel surface). The novelty here is the application of "pulse" cathodic prevention (pulse DC current), rather than the conventional steady DC technique. The paper reports on conventional monitoring (potential mapping and depolarization decay), coupled with visualization of the steel/cement paste interface, using SEM and EDX.

引用

页码：93 / 100

页数：8

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