Title: Ultra-High Performance Fiber-Reinforced Concretes

Author(s): Pierre Rossi

Publication: Concrete International

Volume: 23

Issue: 12

Appears on pages(s): 46-52

Keywords: compressive strength, fiber-reinforced concrete, macrocrack, microcrack, tensile strength

DOI:

Date: 12/1/2001

Abstract:
Ultra-high-performance fiber-reinforced concretes (UHPFRC) are the outcome of a quest that began in the 1930s to find means of increasing the mechanical strength of concrete, in particular its compressive strength. The recent development history of UHPFRC has been marked by three separate approaches. In chronological order of their appearance they are: Compact reinforced composites (CRC) containing between 5 and 10% of metal fibers that are 6 mm in length; Reactive powder concrete (RPC) containing a maximum of 2.5% of metal fibers that are 13 mm in length; and Multi-scale cement composites (MSCC) containing mixtures of short and long fibers (more than 5% in volume). This article presents an overview of UHPFRC developments and challenging perspectives for these materials.