Abstract
1. Micromechanics, Microscopic Observations and Rate Effect.- Fracture process zone in cementitious materials.- Observation of fracture process zone by laser speckle technique and governing mechanism in fracture of concrete.- Tensile fracture of concrete at high loading rates taking account of inertia and crack velocity effects.- 2. Numerical Fracture Analysis, Design Codes and Applications.- Smeared and discrete representations of localized fracture.- Code-type formulation of fracture mechanics concepts for concrete.- The collapse of the Schoharie Creek Bridge: a case study in concrete fracture mechanics.- 3. Nonlinear Fracture or Damage Models and Size Effect.- Application of the fictitious crack model to different types of materials.- Features of mechanics of quasi-brittle crack propagation in concrete.- Size dependence of concrete fracture energy determined by RILEM work-of-fracture method.- Nonlinear fracture of cohesive materials.- Size effect and continuous damage in cementitious materials.- Size-scale transition from ductile to brittle failure: structural response vs. crack growth resistance curve.
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