Fracture behaviour of polyolefin fibre-reinforced self-compacting concrete

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Title: Fracture behaviour of polyolefin fibre-reinforced self-compacting concrete

Author(s): Marcos G. Alberti; Alejandro Enfedaque; Jaime C. Gálvez

Publication: Special Publication

Volume: 310

Issue:

Appears on pages(s): 131-140

Keywords: Self-compacting concrete, fibre-reinforced concrete, polyolefin fibres, fracture behaviour.

Date: 3/17/2017

Abstract:
Fibre-reinforced self-compacting concrete uses the flowability of fresh concrete to improve fibre orientation, thereby enhancing toughness and energy absorption capacity. In the past few years there has been a boost in the development of concretes with macro-synthetic fibres added. In this paper, the mechanical properties of self-compacting concrete with low, medium and high fibre contents of macro polyolefin fibres are studied. Their fracture behaviour is compared with plain self-compacting concrete. It is possible to fit this behaviour within the existing standards requirements. Dispersion obtained for mean fracture values among the different amounts was analysed using a fracture surface analysis and the amount and distribution of fibres.