期刊
CEMENT AND CONCRETE RESEARCH
卷 74, 期 -, 页码 1-9出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cemconres.2015.03.017
关键词
Characterization; Corrosion; Electrochemical properties; Reinforcement; Mortar
资金
- CONICET (Consejo Nacional de Investigaciones Cientificas y Tecnicas)
- Universidad Nacional de San Martin (UNSAM) [800x600 PROG07A/1]
- FONCYT, Secretaria para la Tecnologia, la Ciencia y la Innovacion Productiva, Argentina [PICT 2008/2216]
The accelerated corrosion by the impressed current technique is widely used in studies of concrete durability since it has the advantage that tests can be carried out within reasonable periods of time. In the present work the relationship between the applied current density and the resulting damage on the reinforcing steel, by applying optical microscopy, scanning electron microscopy, gamma-ray radiography and gravimetric measurements, was studied by means of the implementation of accelerated corrosion tests on reinforced mortar. The results show that the efficiency of the applied current is between 1 and 77%, regardless of the applied current density, the water/cement ratio and the mortar cover depth of the specimens. The results show the applicability of the gamma-ray radiography technique to detect localized corrosion of steel rebars in laboratory specimens. (C) 2015 Elsevier Ltd. All rights reserved.
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