ACI 224.1R Causes, Evaluation, and Repair of Cracks in Concrete Structures
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ACI 224.1R Document Information:
Title
Causes, Evaluation, and Repair of Cracks in Concrete Structures
American Concrete Institute
Publication Date:
Mar 1, 2007
Scope:
PREFACE
Cracks in concrete have many causes. They may affect appearance only, or they may indicate significant structural distress or a lack of durability. Cracks may represent the total extent of the damage, or they may point to problems of greater magnitude. Their significance depends on the type of structure, as well as the nature of the cracking. For example, cracks that are acceptable for buildings may not be acceptable in water-retaining structures.
The proper repair of cracks depends on knowing the causes and selecting the repair procedures that take these causes into account; otherwise, the repair may only be temporary. Successful long-term repair procedures must attack the causes of the cracks as well as the cracks themselves.
To aid the practitioner in pinpointing the best solution to a cracking problem, this report discusses the causes, evaluation procedures, and methods of repair of cracks in concrete. Chapter 1 presents a summary of the causes of cracks and is designed to provide background for the evaluation of cracks. Chapter 2 describes evaluation techniques and criteria. Chapter 3 describes the methods of crack repair and includes a discussion of a number of techniques that are available. Many situations will require a combination of methods to fully correct the problem.
Keywords:
- methacrylates
- concrete slabs
- repairs
- autogenous healing
- evaluation
- prestressed concrete
- structural design
- reinforced concrete
- epoxy resins
- volume change
- beams (supports)
- thermal expansion
- consolidation
- shrinkage
- corrosion
- concrete pavements
- specifications
- failure
- tension
- concretes
- precast concrete
- cement-aggregate reactions
- plastics, polymers and resins
- concrete construction
- resurfacing
- mix proportioning
- drilling
- grouting, heat of hydration
- sealing settlement (structural)
- mass concrete
- drying shrinkage
- cracking (fracturing)
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