Fracture of Concrete and Rock

The International Conference on Fracture of Concrete and Rock was organized by the Society for Experimental Mechanics (SEM) subdivision on Fracture of Concrete and Rock and RILEM Committee 89-FMT Fracture MechanicS of Concrete; Test Methods. The venue was Houston, Texas on June 17-19, 1987 and cooperation was provided by ACI 446, Fracture Mechanics and RILEM 90-FHA Fracture Mechanics of Concrete; Applications. The conference co-chai rmen were Professor S. P. Shah, Northwestern Uni versity and Professor S. E. Swartz, Kansas State University with the able assistance of Professor K. P. Chong, University of Wyoming. The conference theme was Fracture Mechanics Applications to Cracking and Fracture of Concrete (plain or reinforced) and Rock Subjected to Uniaxial or Complex Stress States with Static- or Dynamic-Loading Rates. This theme was chosen in recognition of parallel efforts between the rock mechanics community and researchers working in the application of fracture mechanics methods to the problem of cracking and fracture of concrete.

Klappentext

This book focuses on the problems related to a comprehensive treatment of mechanics of fracture of quasi-brittle materials, such as ceramics, concrete and some rock. Experimental treatment of fracture process zone using laser holographic interferometry and infrared thermography as well as theoretical treatment of nonlinear fracture mechanics are discussed in detail. In addition, numerical simulations of strain softening, discrete cracks, and smeared cracks are presented. Models for quasi-static and dynamic fluid-driven cracks in jointed rocks are described. Mathematical treatment and experimental observations of damage in fiber-reinforced cement-based composites elucidate how fibers provide toughening to the materials under consideration. Various test methods to evaluate fracture toughness in Mode I, Mode II, and mixed-mode loading, as well as design methods for demolition of concrete and rock blasting are presented. Other topics include: fatigue, size-effects, analysis of large dams and hydraulic fracture. The book should be of interest to civil engineers, engineers and researchers dealing with ceramics, geophysicists, material scientists and the community involved with fracture of brittle materials.

Inhalt
Keynote Papers.- Fracture Toughness of Cement-Based Materials.- Fracture Toughness Determination of Rocks with Core-Based Specimens.- Dynamic Fracture and Load-Rate Effects.- Energy Balance in Instrumented Impact Tests on Plain Concrete Beams.- A Statistical Theory of Time-Dependent Fracture for Cementitious Materials.- The Design Method for the Demolition of Concrete with Expansive Demolition Agents.- Fatigue Effects in Concrete Fracture.- Fatigue Rupture of Plain Concrete Analysed by Fracture Mechanics.- Kinetics of Crack Growth in Plain Concrete.- On the Estimating Method of Fatigue Strength of the Brittle Materials under Repeated Impulsive Bending Load.- Fatigue Crack Propagation in Plain Concrete.- Fatigue Damage of Concrete.- Mode I and Mixed Mode Fracture.- Do Plain and Fibre Reinforced Concretes Have an R-Curve Behaviour?.- Fracture of Concrete at Cryogenic Temperatures.- Mixed Mode Fracture Tests on Concrete.- Analytical Models.- Numerical Simulation of Concrete Fracture Through a Bilinear Softening Stress-Crack Opening Displacement Law.- Fundamental Issues of Smeared Crack Models.- Mathematical Modelling of Damage Evolution in Concrete and FRC-Materials.- A Hypothesis Concerning the Effects of Macro Porosity on Mechanical Properties of Concrete.- Strain-Softening Simulations of Mixed-Mode Concrete Fracture.- Models of Quasi-Static and Dynamic Fluid-Driven Fracturing in Jointed Rocks.- Fracture Process Zone.- Fracture Process Zone of a Concrete Fracture Specimen.- Fracture Process and Bridging Zone Model and Influencing Factors in Fracture of Concrete.- 3-D Modeling of Process Zone in Concrete by Numerical Simulation.- Size Effects.- Fracture Energy of Heterogeneous Materials and Similitude.- Influence of Size Effects on Opening Mode Fracture Parameters for Precracked Concrete Beams in Bending.- Tension Softening and Size Effects on the Fracture Determination of Geomaterials.- Influence of Fracture Process Zone on Inelastic Behviour of Concrete.- Concrete Applications.- Anchor Bolts Analysed with Fracture Mechanics.- Modeling of Reinforced Concrete Using the Distinct Element Method.- Toughness Evaluation and Its Application to Concrete Structural Design.- Modeling of the Fracture Process in Prenotched Concrete Beams to Examine Size Effects.- Dam Analysis.- Fracture Mechanics of Concrete Gravity Dams.- Computer Simulation of Cracking in a Large Arch Dam Downstream Side Cracking.- Crack Propagation.- Infrared Thermography of Fracture of Concrete and Rock.- Studies on Crack Propagation Resistance of Rocks Based on Hydrofrac Data of Large Specimens.- Fracture Propagation in Concrete under Complex Stress.- Delayed Crack Instability of Concrete.- Methods and Results.- Theoretical Analyses of Test Methods.- Concerning the Measurement of the Fracture Energy of a Microconcrete According to the Crack Growth in a Three Points Bending Test on Notched Beams.- Development of Strength and Deformability of Very Young Concrete.- Fracture Properties of Epoxy Polymer Concrete.- Fracture Characteristics of Concrete under Static Loading.- Author Index.