[en] One of the main processes for repairing concrete structures is patch repair. Efficiency and durability of a repaired system depends on the bond between concrete substrate and repair material. By increasing the surface roughness, the surface treatment of concrete substrate can promote mechanical interlocking that is one of the basic mechanisms of adhesion. Nevertheless, some problems may arise from “co-lateral” effects of the treatment, especially due to the development of microcracks inside the substrate. In the presented paper, the effect of concrete substrate surface preparation has been characterized by roughness measurement, description of microcracking in the near-to-surface layer and a pull-off cohesion test. After repair, pull-off bond strength has been evaluated. It is concluded that selection of a suitable surface treatment technique should be preceded by the analysis of its aggressiveness in relation to the concrete substrate strength. A procedure for bond strength estimation using multiple regression approach, based on parameters describing surface quality really generated from various roughening techniques, is then proposed.
Disciplines :
Civil engineering
Author, co-author :
Courard, Luc ; Université de Liège - ULiège > Département ArGEnCo > Matériaux de construction non métalliques du génie civil
Piotrowski, Tomasz; Warsaw University of Technology
Garbacz, Andrzej; Warsaw University of Technology
Language :
English
Title :
Near-to-Surface properties affecting bond strength in concrete repair
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
L. Courard, and A. Garbacz Surfology: what does it mean for polymer concrete composites? Restor Build Monum 16 4/5 2010 291 302
Silfwerbrand J, Beushausen H. Bonded concrete overlays - bond strength issues. In: Beushausen H, Dehn F, Alexander M.G., editors. Proceedings ICCRRR 2005 International Conference on Concrete Repair, Rehabilitation and Retrofitting, Cape Town, South Africa, Taylor & Francis Group, London, 2006. p. 19-21.
J. Silfwerbrand Improving concrete bond in repair bridge decks Concr Int 12 9 1990 61 66
A. Garbacz, M. Górka, and L. Courard On the effect of concrete surface treatment on adhesion in repair systems Mag Concr Res 57 1 2005 49 60
Courard L, Schwall D, Garbacz A, Piotrowski T. Effect of concrete substrate texture on the adhesion properties of PCC repair mortar. In: Aguiar J.B., Jalali S, Camões A, Ferreira R.M., editors. Proceedings ISPIC 2006 International Symposium Polymers in concrete, Guimarães, Oficinas Gráficas de Barbosa & Xavier, Lda, Braga, Portugal, 2006. p. 99-110.
P.M.D. Santos, and E.N.B.S. Julio Silva VD correlation between concrete-to-concrete bond strength and the roughness of the substrate surface Constr Build Mater 21 8 2007 1688 1695
S. Austin, P. Robins, and Y. Pan Tensile bond testing of concrete repair Mater Struct 28 5 1995 249 259
L. Courard Evaluation of thermodynamic properties of concrete substrates and cement slurries modified by admixtures Mater Struct 35 3 2002 149 155
L. Courard Parametric study for the creation of the interface between concrete and repair products Mater Struct 33 1 2000 65 72
EN 1504 (2003) Products and systems for the protection and repair of concrete structures - Definitions - Requirements - Quality control and evaluation of conformity, CEN (Brussels).
Courard L, Garbacz A, Wolff L. Evaluation and quality assessment. In: Seidler P. editor. RILEM TC 184 - IFE Industrial floors. RILEM Report 33, RILEM Publications S.A.R.L., 2006. p. 59-89, [chapter 4].
Silfwerbrand J, Beushausen H, Courard L. Bond. In: Bissonette B, Courard L, Fowler DW, Granju J-L, editors. 193-RLS RILEM TC Bonded cement-based material overlays for the repair, the lining or the strengthening of slabs and pavements, Springer, 2011. p. 51-79, [chapter 4].
Pretorius J, Kruger D. The influence of surface roughness on the bond strength of concrete repairs. In: Fowler DW, editor. CD Proceedings ICPIC 01, Xth International Congress on Polymers in Concrete, Honolulu, Hawaï, 2001. Paper nr 13.
Fukuzawa K, Mitsui M, Numao T. Surface roughness indexes for evaluation of bond strengths between CRFP sheet and concrete. In: Fowler D.W., editor. CD Proceedings ICPIC 01, Xth International Congress on Polymers in Concrete, Honolulu, Hawaï, 2001: Paper nr 12.
B. Bissonnette, L. Courard, A.M. Vaysburd, and N. Belair Concrete removal techniques: influence on residual cracking and bond strength Concr Int 28 12 2006 49 55
A. Garbacz, L. Courard, and K. Kostana Characterization of concrete surface roughness and its relation to adhesion in repair systems Mater Charact 56 4-5 2006 281 289
ACI Repair Manual, ACI 546R-04: Concrete Repair Guide, American Concrete Institute, 2013.
L. Courard Adhesion of repair systems to concrete: influence of interfacial topography and transport phenomena Mag Concr Res 57 5 2005 273 282
Concrete Repair Manual, ACI International, Farmington Hills, MI, USA, 1999.
F. Perez, B. Bissonnette, and L. Courard Combination of mechanical and optical profilometry techniques for concrete surface roughness characterization Mag Concr Res 61 6 2009 389 400
EN 1766 (2000). Products and systems for the protection and repair of concrete structures - Test methods - Reference concretes for testing, CEN (Brussels).
L. Courard, and M. Nelis Surface analysis of mineral substrates for repair works: roughness evaluation by profilometry and surfometry analysis Mag Concr Res 55 4 2003 355 366
F. Perez, B. Bissonnette, and L. Courard Combination of mechanical and optical profilometry techniques for concrete surface roughness characterization Mag Concr Res 61 6 2009 389 400
Courard L, Schwall D, Piotrowski T. Concrete surface roughness characterization by means of opto-morphology technique. In: Czarnecki L, Garbacz A, editors. Adhesion in Interfaces of Building Materials: a Multi-scale Approach, Advances in Materials Science and Restoration AMSR No. 2, Aedificatio Publishers, 2007. p. 107-115.
EN 1542 (1999) Products and systems for the protection and repair of concrete structures - Test methods - Measurement of bond strength by pull-off, CEN (Brussels).
L. Courard, and B. Bissonnette Essai dérivé de l'essai d'adhérence pour la caractérisation de la cohésion superficielle des supports en béton dans les travaux de réparation: analyse des paramètres d'essai Mater Struct 37 5 2004 342 350 [in French]
E. Bonaldo, J.A.O. Barros, and P.B. Lourenço Bond characterization between concrete substrate and repairing SFRC using pull-off testing Int J Adhes Adhes 25 6 2005 463 474
Similar publications
Sorry the service is unavailable at the moment. Please try again later.
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.