Article (Scientific journals)
Specification Guidelines for Surface Preparation of Concrete prior to Repair
Courard, Luc; Bissonnette, Benoît; Garbacz, Andrzej et al.
2020In Concrete International, p. 53-61
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Keywords :
concrete; surface; preparation; conditioning; cleaning; removal; strength; moisture; cleanliness; carbonation; quality control
Abstract :
[en] To achieve a durable, repaired concrete structure, the specifier of a repair project should require the use of equipment, techniques, and procedures that are appropriate for the project objectives, deterioration mechanism(s), environmental conditions, structural circumstances, and other local conditions and limitations that exist for the specific structure or part of the structure. Success will be dependent on determining the cause and extent of concrete distress or deterioration, establishing realistic repair objectives, and developing a repair strategy to address the problem1,2 Ultimately, the project team must achieve: • The required condition of the substrate regarding cleanliness, roughness, cracking, tensile and compressive strength, chlorides and other aggressive agents, depth of carbonation, moisture content, and temperature; • Compatibility of the existing concrete and reinforcement with the repair and protection materials and systems, and compatibility between different repair and protection products, including avoiding the risk of creating conditions which may cause acceleration of corrosion; • The specified characteristics and properties of repair materials and systems and the composite repair system regarding the fulfilment of their purpose to prolong the useful service life of the structure; and • The required repair application conditions like ambient temperature, humidity, wind force, precipitation, and any temporary protection. Concrete surface preparation deals with the various operations needed to fulfill these requirements. This article summarizes the results and outcome of a research project titled “Development of Specifications and Performance Criteria for Surface Preparation Based on Issues Related to Bond Strength.”3 The work was sponsored by the ACI Foundation’s Concrete Research Council, Farmington Hills, MI, and the U.S. Department of the Interior’s Bureau of Reclamation (USBoR), Denver, CO. The research was also supported by Laval University, Quebec City, QC, Canada; the University of Liège, Liège, Belgium; and Warsaw University of Technology, Warsaw, Poland.
Disciplines :
Civil engineering
Author, co-author :
Courard, Luc  ;  Université de Liège - ULiège > Département ArGEnCo > Matériaux de construction non métalliques du génie civil
Bissonnette, Benoît;  Université Laval
Garbacz, Andrzej;  Warsaw university of technology
Vaysburd, Alex;  Vaycon Consulting
von Fay, Kurt;  U.S. Bureau of Reclaimation
Language :
English
Title :
Specification Guidelines for Surface Preparation of Concrete prior to Repair
Publication date :
May 2020
Journal title :
Concrete International
ISSN :
0162-4075
Publisher :
American Concrete Institute, United States
Pages :
53-61
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
ACI - American Concrete Institute [US-MI] [US-MI]
WBI - Wallonia-Brussels International [BE]
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since 09 May 2020

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