Determination of the time-to-corrosion of concrete structures

Title: Determination of the time-to-corrosion of concrete structures
Author(s): M. Raupach
Paper category : conference
Book title: International Conference on Advances in Concrete and Structures
Editor(s): Ying-shu Yuan, Surendra P. Shah and Heng-lin Lü
Print-ISBN: 2-912143-41-1
e-ISBN: 2351580176
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 516 - 525
Total Pages: 10
Nb references: 2
Language: English

Abstract: 
Different sensor systems have been developed to monitor the time-to-corrosion of the reinforcement, designed to be installed directly into the concrete during con-struction or afterwards into drilled holes of existing structures. Most of these sensors as the so-called Anode-Ladder or the Expansion-Ring-System consist of different single sensors in defined distances from the concrete cover, e.g. of 6 steps, each of about 1 cm width, depending on the thickness of the concrete cover. These sensors indicate the depth of the critical chloride content and the depth of the carbonation front initiating corrosion: The time-to-corrosion can be determined, enabling the owners of buildings to initiate preventive protection measures before cracks and spalling occur, i.e. before the costs for repair measures increase over-proportionately. This paper shows the principles and some practical examples of the measurement of the corrosion behaviour of the reinforcement under on-site-condi-tions.

Online publication: 2003-08-10
Publication type : full_text
Public price (Euros): 0.00