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High Strength/High Performance Concrete (HSC/HPC) continues to be the object of particular interest and extensive research, and its use in construction is increasing continuously. fib Bulletin 42 summarises the available information on the material behaviour of HSC/HPC, and develops a set of code-type constitutive relations as an extension of CEB-FIP Model Code 1990. Literature on experimental data and international guidelines, standards and recommendations were reviewed, and already-existing constitutive relations and models were evaluated. In addition to a number of material laws chosen and adjusted for this report, some new constitutive relations were developed based on the collected data...
This book focuses on the ethical issues in engineering that have to do with assessment, design, sustainability and globalization.
Under the pressure of harsh environmental conditions and natural hazards, large parts of the world population are struggling to maintain their livelihoods. Population growth, increasing land utilization and shrinking natural resources have led to an increasing demand of improved efficiency of existing technologies and the development of new ones. A
The introduction by the Task Group's convenor L. Taerwe 'Model uncertainties in reliability formats for concrete structures' gives an outline of the general approach summing-up his former contribution to CEB Bulletin 219 'Safety and Performance Concepts' on the consistent treatment of model uncertainties in reliability formats for concrete structures. The second contribution 'An analysis of model uncertainties: ultimata limit state of buckling' by M. Pinglot, F. Duprat and M. Lorrain investigates the model uncertainties of hinged columns and the influence of boundary conditions and proposes appropriate safety elements. The third contribution 'Model uncertainties concerning design equations for the shear capacity of concrete members without shear reinforcement' by G. König and J. Fischer compares suggested formula from various sources (CEB-FIP Model Code, Eurocode 2,Remmel) to 176 test results from a data base covering concrete strengths from 20 to 111 MPa.