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Comparison of resistance to chloride penetration of concretes and mortars for repair



Title: Comparison of resistance to chloride penetration of concretes and mortars for repair
Author(s): L. Bertolini
Paper category : conference
Book title: Third International RILEM Workshop on Testing and Modelling Chloride Ingress into Concrete
Editor(s): C. Andrade and J. Kropp
Print-ISBN: 2-912143-48-9
e-ISBN: 2912143578
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 165 - 168
Total Pages: 4
Nb references: 22
Language: English


Abstract: The paper reports the results of accelerated tests aimed at studying the resistance to chloride penetration of cementitious materials used in the conventional repair of reinforced concrete structures damaged by corrosion of embedded steel. Tests were carried out on two repair mortars (a commercial polymer-modified mortar and a mortar with pozzolanic cement and 0.4 water/cement ratio). For comparison, four types of concrete made with different water/cement ratios (0.5 and 0.65) and cement types (portland-limestone and slag cements) were also tested. Specimens were subjected to wetting-drying cycles with a 3.5% NaCl solution and profiles of total chloride content were measured after different times of exposure. Other types of tests aimed at studying the chloride ingress were also carried out and the corrosion behaviour of steel embedded in the tested materials was studied. The results of different tests are discussed in order to investigate on their significance with regard to the actual behaviour of the repair materials in chloride environments.


Online publication: 2002-12-15
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143578.010