Constitutive Modelling of High Strength/high Performance Concrete

Constitutive Modelling of High Strength/high Performance Concrete

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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. The criteria for the choice of the existing relations as well as the development of the new constitutive relations involved their simplicity and operationality (code-type mathematical formulations). Furthermore, they had to be physically sound and if possible describe the behaviour of both high-performance and normal strength concretes by a unique relation. Finally, compliance with the specifications given in the CEB-FIP Model Code 1990 was examined. This State-of-art report is intended for engineers and represents a summary of the relevant knowledge available to and possessed by the members of the Task Group at the time of its drafting.... proposal of the CEB-FIP Working Group refers to the mean values of the compressive strength fcm = fck + aˆ†f, whereas CEB-FIP MC 90 operates with the characteristic ... MPa 61 .1 f , f/ f f f ctmo 56 .0 cmo cm ctmo ctm = a‹… = 140 160 Fig. ... fib Bulletin 42: Constitutive modelling of high strength/high performance concrete 11.

Title:Constitutive Modelling of High Strength/high Performance Concrete
Author:fib Fédération internationale du béton
Publisher:fib Fédération internationale du béton - 2008-01-01


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