DFG Research Group 537: Modelling reinforcement corrosion - Corrosion measurements on cracked reinforced concrete beams

被引：0
|
作者：
Osterminski, K. [1 ]
Volkwein, A. [1 ]
Tian, W. [1 ]
Schiessl, P. [1 ]
机构：
[1] Tech Univ Munich, Ctr Bldg Mat, Munich, Germany
来源：
CONCRETE REPAIR, REHABILITATION AND RETROFITTING II | 2009年
关键词：
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The alkalinity of concrete forms a protection for the embedded steel. When cracks occur this protection is disturbed and the migration of corrosion-promoting substances into the crack is possible. In this case macro element corrosion with high rates Usually takes place. This process is basically influenced by the conditions in the crack (moisture content, oxygen, chloride and PH), the electrolytic resistivity of the concrete and the ratio of the anode to cathode Surface. The aim of subproject A3 of the DFG research group 537 is to analyse these influences so that quantification is possible. Therefore the basic parameters for the rate of corrosion, like the distribution of potential and resistivity will be investigated depending on mix design and environmental conditions. The paper presents first results of concretes made with Portland cement and blast furnace slag cement after about 55 days of cyclic water and chloride solution exposure. Active corrosion and differences in corrosion behaviour due to concrete composition were found.
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页码：181 / 182
页数：2
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