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Compatibility performance as a fundamental requirement for the repair of concrete structures with Self-Compacting Repair Mortars
Courard, Luc; Bissonnette, Benoît
2007In De Schutter, Geert; Boel, V. (Eds.) Self Compacting Concrete SCC2007
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Keywords :
concrete; compatibility; repair; self-compacting mortar; adhesion
Abstract :
[en] Durable adhesion of repair material on concrete substrate requires compatibility between the materials to be bonded. There are four main compatibility components to be addressed in any concrete repair scenario: dimensional, permeability, chemical and electrochemical compatibility. Among those, dimensional compatibility is often prevalent: while a cement-base repair material inevitably undergoes shrinkage, the substrate opposes to its free movement, a situation that can lead to cracking and, subsequently, promote debonding. Besides, an essential requirement for bond development is the creation of the interface itself: the intimate contact between the repair system and concrete substrate is required in order to maximize adhesion. Adequate compaction of the new layer is consequently one of the main parameters that will govern the quality of the bond: sufficient vibration or specific rheological properties for the repair material are needed. Self-Compacting Repair Mortar (SCRM) can be advantageously used in many repair situations. Limestone fillers seem to offer interesting advantages as addition to these repair materials as they increase the workability of the final product. Several materials have been tested and characterised by means of a physical, chemical and mechanical characterization test program: specific attention has been given to water demand and superplasticizer efficiency.
Disciplines :
Civil engineering
Author, co-author :
Courard, Luc  ;  Université de Liège - ULiège > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil
Bissonnette, Benoît
Language :
English
Title :
Compatibility performance as a fundamental requirement for the repair of concrete structures with Self-Compacting Repair Mortars
Publication date :
September 2007
Event name :
5th International RILEM Symposium on Self-Compacting Concrete
Event organizer :
RILEM
Event place :
Gent, Belgium
Event date :
3 - 5 septembre 2007
By request :
Yes
Audience :
International
Main work title :
Self Compacting Concrete SCC2007
Editor :
De Schutter, Geert
Boel, V.
Publisher :
Rilem Publications s.a.r.l., Bagneux, France
ISBN/EAN :
9782351580509
Pages :
667-675
Peer reviewed :
Peer reviewed
Available on ORBi :
since 29 July 2009

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