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FICOFIRE - High performance fiber reinforced concrete of enhanced fire resistance

2011-11-25

Title: FICOFIRE - High performance fiber reinforced concrete of enhanced fire resistance

Reference: POCTI/ECM/57518/2004

Description: Develop a Fibrous Concrete of 50-70 MPa compressive strength, of Enhanced Fire Resistance and high ductility (FRCEFR). Distinct types of fibers will be used. One type has very low degree of polymerization, which in presence of a very high temperature will sublime. Cellulose fibers with fire retardants products which, in presence of very high temperature, will be transformed, by pyrolise, into carbon, shrinking, is an alternative solution. Both types of fibers, under the action of fire will create a network of micro channels for the escape of the water vapor. These types of fibers have also the purpose of decrease the crack propagation during the concrete plastic shrinkage phase. The other type of fiber has the purpose of providing high ductility for the concrete post-cracking behavior. For the alveolar concrete slab application the FRCEFR has also the purpose of being possible the production of slabs of larger span and thickness without the use of steel stirrups.

Date: March 2005 to March 2007

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