Guide for the Design and Construction of Fiber-Reinforced Concrete Structures

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Guide for the Design and Construction of Fiber-Reinforced Concrete Structures

Size: 0.6 MB | Format: PDF | Publisher: CNR – Advisory Committee on Technical Recommendations for Construction | Year: 2007 | pages: 57

This document contributes to the series published over the last few years by the Italian CNR
(National Research Council) relating to the structural use of composite materials, with the first
volume being the Instructions n. 200 in 2004. The documents published so far have dealt with the
following: plating of reinforced and prestressed concrete as well as masonry structures through the
use of long fibers reinforced composite materials (FRP) (CNR-DT 200/2004), plating of timber
structures (CNR-DT 201/2005) as well as metallic ones (CNR-DT 202/2005) and finally, the use of
FRP bars as reinforcement of concrete structures (CNR-DT 203/2006).
The subject of this document is the structural use of a completely different composite material:
Fiber Reinforced Concrete (FRC). It does not have a polymeric matrix like a Fiber Reinforced
Polymer (FRP) but a cementitious matrix to which short fibers are added. They can be made of
steel, polymeric materials as well as inorganic materials such as carbon, glass and natural materials.
Furthermore, an ordinary steel reinforcement as well as reinforcing prestressed bars can also be
present. The adding of fibers to concrete gives a significant residual strength after cracking. This
property depends on many factors, including the aspect ratio (corresponding to the
length/equivalent diameter of the fibers), the volumetric percentage of the fibers as well as their
physical and mechanical properties.
FRC structures have become gradually more widespread worldwide over the last few years. This
has consequently led to the drawing up of technical guidelines becoming necessary.

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