Failure, distress. and repair of. concrete structures WOODHEAD PUBLISHING LIMITED. Norbert Delatte. Edited by. Oxford Cambridge New Delhi

Transcription

1 Failure, distress and repair of concrete structures Edited by Norbert Delatte Boca Raton CRC Press Boston New York Washington, DC WOODHEAD PUBLISHING LIMITED Oxford Cambridge New Delhi

2 Contents Contributor contact details ix Introduction xiii Part I Failure mechanisms in concrete 1 Causes and mechanisms of deterioration in reinforced concrete 3 V. Penttala, Helsinki University of Technology, Finland 1.1 Introduction Microstructure and role of moisture in concrete deterioration Physically induced deterioration Chemically induced deterioration Summary References and further reading 29 2 Types of damage in concrete structures 32 K. Kovler, National Building Research Institute, Israel; and V, Chernov, Ashdod Port Company Ltd, Israel 2.1 Introduction Types of concrete damage Causes and mechanisms of concrete damage Chemical attack Fire Static overloading Impact Earthquakes Malicious damage Case studies Conclusions References 56

3 overview vi Contents 3 Types and causes of cracking in concrete structures 57 C. J. Larosche, Wiss, Janney, Elstner Associates, Inc., USA 3.1 Introduction Cracking in a plastic state Cracking after hardening Assessment of distressed concrete References 83 4 Condition assessment of concrete structures 84 U. Dilek, MACTEC Engineering and Consulting, Inc., USA 4.1 Introduction Evaluation of concrete structures Methodologies to evaluate concrete structures Stages of condition assessment Evaluation techniques and test methodologies Laboratory testing on cores Load testing of structures Sources of further information and advice Acknowledgement References 134 Part II Repair of concrete structures 5 Standards and guidelines for repairing concrete structures 141 M. Raupach, Institute of Building Materials Research of Aachen University, Germany; and L. Wolff, Consulting Engineers, Raupach Bruns Wolff GmbH & Co. KG, Germany 5.1 Introduction Systematics of concrete repair according to EN International regulations for condition evaluation, repair and maintenance References Appendix Methods of crack repair in concrete structures 169 C. A. Issa, Lebanese American University, Lebanon 6.1 Crack repair methods selection ] Crack repair methods Summary Sources of further information and advice References 192

4 Contents vii 7 Repair materials for concrete structures 194 D, W. Fowler, The University of Texas at Austin, USA 7.1 Introduction Cementitous materials Polymeric materials Joint sealants Sealers New materials Material selection Sources of further information and advice References Bonded concrete overlays for repairing concrete structures 208 J. L. Silfwerbrand, Swedish Cement and Concrete Research Institute and Royal Institute of Technology, Sweden 8.1 Introduction Preparation of existing concrete for repair Methods of removing damaged concrete Factors influencing bond Case studies Recommendations Future trends and research needs Sources of further information and advice References Repair/retrofitting of concrete structures with fiber-reinforced polymers 244 S. N. Bousias, University of Patras, Greece 9.1 Introduction Repair/retrofitting with externally bonded fiber-reinforced polymer (FRP) composite Retrofitting for flexure and shear Enhancement of deformation capacity Repair/retrofitting for durability-related problems Practical aspects: detailing Application example Future trends Sources of further information and advice References 266

5 viii Contents 10 Protection systems for concrete structures 270 M. A. Murray, MAM, LLC, USA 10.1 Introduction Surface preparation Polymer overlays Case studies Recommendations References Patching of deteriorated concrete structures 282 M. A. Murray, MAM, LLC, USA 11.1 Introduction Condition survey Surface preparation Repair materials Material placement Case studies Recommendations References Durability of repaired concrete structures 296 D. Cusson, National Research Council Canada, Canada 12.1 Introduction Designing concrete repairs for durability Durability assessment of repaired concrete structures Case studies Concluding remarks and recommendations Sources of further information and advice References 319 Index 323