ABSTRACT
Radical Concrete Technology. Edited by R K Dhir and P C Hewlett. Published in 1996 by E & FN Spon, 2-6 Boundary Row, London SE1 8HN, UK. ISBN 0 419 21480 1. ABSTRACT. The following paper presents the result of a research aimed to the study of a new metallic fibre for concrete reinforcement. The principal characteristic of this fibre is that it is provided by a special anchorage device that improves very much the interaction with cementitious matrix. The tensile load substained by the fibre is transferred to matrix by a wedge effect induced by the particular shape of the anchorage reducing the consequent pullout displacements. So fibre can be loaded till it stretches without great displacements take place and this enhances concrete strength and reduces crack width and propagation. Different tests have been performed; at the end of the paper is presented a diagram that has been obtained as an average of different tests executed to compare the new fibres with the conventional deformed fibres. Keywords: Deformed fibre, Fibre-matrix interaction, Anchorage device, Stress distribution, Flexural behaviour, Crack width. Professor Lucio Della Sala is professor of Structural Engineering at University of Basilicata, Italy. His principal interest is the study of masonry ancient buildings and their restoration. He also is interested in general problems concerning composite materials. Dr Rosario Cerone is a civil engineer whose main research subject is the study of the behaviour of steel fibre reinforced concrete. In particular, he is concerned with numerical modelling of fibre reinforced cementitious composites and with the study of new technologies for the enhancement of steel fibre reinforced concrete performances.
