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

Courard, Luc; Bissonnette, B.

doi:10.1007/bf02481681

Article (Scientific journals)

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

Courard, Luc; Bissonnette, B.

2004 • In Materials and Structures, 37 (269), p. 342-350

Peer Reviewed verified by ORBi

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https://hdl.handle.net/2268/17594

DOI
10.1007/bf02481681

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Abstract :

[en] Concrete repair works involve most of the time the removal of the damaged or contaminated surface layer. It is necessary to assess the effect of that operation (tool, procedure, etc) upon the integrity of the residual concrete substrate, prior to the placement of the repair material, since it can affect significantly the adhesion of the repair system. This paper summarizes the findings of a study intended to develop a simple test method for that purpose. After a thorough review of the related scientific documentation, it has been decided to adapt the so-called pull-off test, which is commonly used to determine the bond strength of repair products. An experimental program has been conducted to evaluate the influence of various test parameters on the measured cohesion of a reference concrete surface: transfer plate thickness and diameter, core drilling depth, speed of loading, adhesive type and thickness, and number of tests. A multivaried statistical analysis of the test results clearly shows that the plate diameter and core depth are the most significant parameters, presumably with threshold values, and that there exists a synergetic effect between them. Also, a minimum number of tests can be defined based on the standard deviation and required level of confidence of the results. Overall, the test method shows good potential for a sound quantitative evaluation of a concrete surface mechanical integrity prior to repair, provided that the test parameters are selected properly.

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, B.

Language :

French

Title :

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

Alternative titles :

[en] Adaptation of the pull-off test for the evaluation of the superficial cohesion of concrete substrates in repair works: analysis of the test parameters

Publication date :

June 2004

Journal title :

Materials and Structures

ISSN :

1359-5997

eISSN :

1871-6873

Publisher :

R I L E M Publications, Bagneux, France

Volume :

Issue :

269

Pages :

342-350

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 29 July 2009

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Bibliography

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