CSA A864 : 0
Current
The latest, up-to-date edition.
GUIDE TO THE EVALUATION AND MANAGEMENT OF STRUCTURES AFFECTED BY ALKALI-AGGREGATE REACTION
Hardcopy , PDF
English
01-02-2000
CSA A864 Task Group
Preface
1. Scope
2. Definitions and Reference Standards
2.1 Definitions
2.2 Reference Standards
3. General
3.1 The Nature of Alkali-Aggregate Reaction
3.2 The Current Situation
3.3 Why Alkali-Aggregate Reaction is Important to the
Engineer
3.4 Types of Alkali-Aggregate Reaction
3.5 Where is Alkali-Aggregate Reactive Concrete Found?
3.6 General Procedures for Diagnosis of AAR in Structures
4. Field Symptoms of Alkali-Aggregate Reaction
4.1 Assessment
4.2 Concrete Surface Features Indicative of AAR
4.3 Field Symptoms of AAR Affecting Various Types of
Concrete Structures
5. Diagnosis of Alkali-Aggregate Reaction
5.1 General
5.2 Type and Depth of Investigation Required
5.3 Investigation Team
5.4 Documentary Evidence
5.5 Site Investigation
5.6 Sampling
5.7 Laboratory Investigation
5.8 Evaluation of Observations and Diagnosis
6. Petrographic Examination of Concrete for AAR
6.1 Preliminary Manipulation and Examination of Concrete
Samples in the Laboratory
6.2 Petrographic Examination and Signs of Alkali-Aggregate
Reaction
6.3 Petrographic Damage Rating
7. Assessment of Future Behaviour of the Concrete Structure
7.1 Physical Properties
7.2 Expansion Forecasts
7.3 Durability Considerations
7.4 Structural Considerations
8. Retardation and Mitigation
8.1 Introduction
8.2 Drainage
8.3 Cladding and Surface Treatments
8.4 Maintenance to Reduce Rate of Expansion
8.5 Deicing Chemicals
8.6 Chemical Suppression of Alkali-Aggregate Reactivity
8.7 Restraint of Expansion
8.8 Mitigation
9. Closing Remarks
Tables
Figures
Appendix A - Proposed Forms for General Surveys of Concrete
Structures Potentially Affected by AAR
Appendix B - Procedures for Expansion Tests on Cores
Appendix C - Test Procedure for Extraction of Aggregates from
Cores
Appendix D - Test Procedure for Determination of Water-
Soluble Alkali Content
Appendix E - Bibliography
Canadian experts on the diagnosis and treatment of concrete structures affected by alkali-aggregate reaction (AAR) have written this guide. Providing information on the symptoms and signs of concrete affected by AAR, how to identify AAR and distinguish it from other mechanisms of deterioration in concrete, and how to assess the severity and extent of AAR in concrete. Also provided advice on the best ways of evaluating, treating and maintaining structures affected by AAR. A Guide of use to owners of structures affected by AAR and people involved in such work.
DocumentType |
Standard
|
Pages |
121
|
PublisherName |
Canadian Standards Association
|
Status |
Current
|
CSA S448.1 : 2010 : R2015 | REPAIR OF REINFORCED CONCRETE IN BUILDINGS AND PARKING STRUCTURES |
CSA S448.1 : 2010 | REPAIR OF REINFORCED CONCRETE IN BUILDINGS AND PARKING STRUCTURES |
CSA A23.1 A23.2 : 2014 | CONCRETE MATERIALS AND METHODS OF CONCRETE CONSTRUCTION/TEST METHODS AND STANDARD PRACTICES FOR CONCRETE |
ASTM C 823 : 2000 | Standard Practice for Examination and Sampling of Hardened Concrete in Constructions |
ASTM C 597 : 2016 : REDLINE | Standard Test Method for Pulse Velocity Through Concrete |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.