The special issue is based on a selection of the material presented and discussed in the framework of the International Workshop on Fibre Reinforced Concrete held in Catania on June 22nd, 2007 in the occasion of Fracture Mechanics Concrete Structure 6th International Conference. Because the main inhibitor for application of this technology in engineering practice, both in Europe and in North America, is the lack of appropriate codes and standards as well as suitable certification, the aim of the workshop was to bring together experts from all over the world, whose past and current research efforts have been responsible for advancing the state of the art of FRC and who are familiar with the associated professional practice issues, to discuss the key features of an International Standard like that in progress for the next FIB Model Code. ACI and RILEM have already undertaken major efforts to refine design methodologies. In fact, the most important step, still in progress, is the effort to propose the most reliable equations for structure design by using short discrete discontinuous fibres as diffuse reinforcement to improve both the cementitious composite performance at serviceability limit conditions, by increasing the small crack opening residual strength, and the ultimate bearing capacity of structures for large crack openings, where fibres act as a partial replacement of conventional steel reinforcement. In special cases the use of high fibre contents can even completely replace conventional steel reinforcement showing a hardening controlled behaviour in bending: this feature is particularly interesting for thin elements, where traditional reinforcement cannot be easily used, because it requires minimum covers to guarantee durability. The Special issue aims at giving the reader a general overview of possible structural applications of fibre reinforcement not only in Europe and USA with the contribution of Falkner, Walraven, Sernà and Li, but also in Japan, Australia, China and India where the fibre market is growing in terms of quality and quantity respectively with the contribution of Rokugo, Foster, Luong and Appa Rao.
FRC: Structural Applications and Standards
DI PRISCO, MARCO
2009-01-01
Abstract
The special issue is based on a selection of the material presented and discussed in the framework of the International Workshop on Fibre Reinforced Concrete held in Catania on June 22nd, 2007 in the occasion of Fracture Mechanics Concrete Structure 6th International Conference. Because the main inhibitor for application of this technology in engineering practice, both in Europe and in North America, is the lack of appropriate codes and standards as well as suitable certification, the aim of the workshop was to bring together experts from all over the world, whose past and current research efforts have been responsible for advancing the state of the art of FRC and who are familiar with the associated professional practice issues, to discuss the key features of an International Standard like that in progress for the next FIB Model Code. ACI and RILEM have already undertaken major efforts to refine design methodologies. In fact, the most important step, still in progress, is the effort to propose the most reliable equations for structure design by using short discrete discontinuous fibres as diffuse reinforcement to improve both the cementitious composite performance at serviceability limit conditions, by increasing the small crack opening residual strength, and the ultimate bearing capacity of structures for large crack openings, where fibres act as a partial replacement of conventional steel reinforcement. In special cases the use of high fibre contents can even completely replace conventional steel reinforcement showing a hardening controlled behaviour in bending: this feature is particularly interesting for thin elements, where traditional reinforcement cannot be easily used, because it requires minimum covers to guarantee durability. The Special issue aims at giving the reader a general overview of possible structural applications of fibre reinforcement not only in Europe and USA with the contribution of Falkner, Walraven, Sernà and Li, but also in Japan, Australia, China and India where the fibre market is growing in terms of quality and quantity respectively with the contribution of Rokugo, Foster, Luong and Appa Rao.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
