Fracture Mechanics Test Methods For Concrete

ISBN-13: 9780412411007 / Angielski / Twarda / 1990

Spon; A. Carpinteri; S. Shah

Opis

This work reviews methods for the experimental determination of concrete toughness and presents theories and models suitable for describing cracking and fracturing phenomena in plain and reinforced concrete.

Recenzje

"This book should help the international community in implementing the fracture mechanics-based design Codes. - Correspondence

Spis treści

Preface. RILEM technical committee 89-FMT. Subcommittees. Notched beam test: mode I fracture toughness. Introduction. Summary and recommendation. Proposal 1: Two parameter model (TPM). Proposal 2: Size Effect Law (SEL). Proposal 3: Effective Crack Model (ECM). Comparison of ECM and TPM. Application of proposed fracture models to large structures. Acknowledgement. References. Appendices (Test data, Proposal 1 and ECM). Fracture properties of concrete as determined by means of wedge splitting tests and tapered double cantilever beam tests. Introduction. Description of experiments. Experimental results. Determination of Gf-values and tensile softening diagrams. Evaluation of fracture toughness Kic by the compliance method. Mode I fracture parameters. Conclusions and recommendations. References. Mixed-mode crack propagation in concrete. Introduction. Mixed-mode fracture criteria. Test specimen geometries. Fracture of concrete in compression. Conclusions. References. Appendix (Round robin). Loading rate, temperature and humidity effects. Loading rate effects. Temperature and moisture influence. References. Fracture process zone detection. Introduction. Compliance measurements. X-ray techniques. Optical microscopy. Scanning electron microscopy. Electric resistance strain gauge techniques. Photoelastic methods. Mercury penetration measurements. Dye penetrants. Infrared vibrothermography. Ultrasonic pulse velocity. Demec gauges. Acoustic emission. Interferometry techniques. Multi-cutting techniques. Numerical methods. Conclusions. Acknowledgements. References. Laser interferometry methods. Holographic interferometry. Speckle photography. Speckle interferometry. References. Indices.