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Restoration of Glass Panel – Reinforced Concrete Grillage Roof Shell of Ensor Gallery in Ostend (B)

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Abstract:

The roof of the Ensor-gallery at Ostend is a cylindrical vault, constructed as a coarse grillage of reinforced concrete, with embedded reinforced concrete roof panels with prismatic glass tiles. The concrete ribs of the roof shell were heavily damaged by long term exposure to the chloride containing sea air, causing severe reinforcement corrosion. The paper presents the experimental data on the degradation, as well as the alternative approach used in the restoration project to avoid the loss of a major part of the authentic material. The approach is based on a combination of galvanic cathodic protection with embedded and bored in sacrificing anodes, the application of a chloride inhibiting impregnation followed by a realkalising treatment on the preserved parts, concrete repair and reconstruction with a self-compacting, shrinkage compensating, polymer modified repair mortar. Completely denuded steel reinforcement bars were replaced by glass fiber reinforced polyester rods.

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Periodical:

Advanced Materials Research (Volume 1129)

Pages:

599-606

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1129.599

Citation:

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Online since:

November 2015

Authors:

Sven Ignoul, Dionys Van Gemert

Keywords:

Cathodic Protection, Chloride Inhibition, Concrete Degradation, Durability, PCC, Restoration, Self-Compacting Repair Mortar

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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References

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