High elongation fibre with good anchorage

E - Fixed Constructions – 04 – C

Patent

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Details

E04C 5/01 (2006.01)

Patent

CA 2762051

The invention relates to a steel fibre for reinforcing concrete or mortar. The fibre has a middle portion and anchorage ends. The middle portion has a maximum load capacity Fm and an elongation at maximum load Ag+e. The elongation at maximum load Ag+e is at least 2.5 %. The steel fibre has an anchorage force in said concrete or said mortar of at least 90 % of the maximum load capacity Fm. The anchorage force is the maximum load obtained during a pull out test of a steel fibre embedded with one of the anchorage ends in the concrete or the mortar. The steel fibre has the advantage that it can be used at normal dosages in load carrying structures of concrete.

L'invention concerne une fibre en acier destinée à renforcer du béton ou du mortier. La fibre présente une partie centrale et des extrémités d'ancrage. La partie centrale présente une capacité nominale maximale Fm et un allongement à une charge maximale Ag+e. L'allongement à la charge maximale Ag+e est d'au moins 2,5 %. La fibre en acier présente une force d'ancrage dans ledit béton ou ledit mortier d'au moins 90 % de la capacité nominale maximale Fm. La force d'ancrage est la charge maximale obtenue pendant un essai d'arrachement d'une fibre d'acier encastrée avec une des extrémités d'ancrage dans le béton ou le mortier. La fibre en acier présente l'avantage qu'elle peut être utilisée à des dosages normaux dans des structures porteuses en béton.

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