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Development of Composites Reinforced by Polyester Fibres

Published online by Cambridge University Press:  16 February 2011

Ahmed Jelidi
Affiliation:
Laboratoire des Matériaux Minéraux, Bât. 407, Institut National des Sciences Appliquées de Lyon, 20, Avenue Albert Einstein.69621 Villeurbanne Cedex.France
Michel Chabannet
Affiliation:
Laboratoire des Matériaux Minéraux, Bât. 407, Institut National des Sciences Appliquées de Lyon, 20, Avenue Albert Einstein.69621 Villeurbanne Cedex.France
Jean Ambroise
Affiliation:
Laboratoire des Matériaux Minéraux, Bât. 407, Institut National des Sciences Appliquées de Lyon, 20, Avenue Albert Einstein.69621 Villeurbanne Cedex.France
Jean Pera
Affiliation:
Laboratoire des Matériaux Minéraux, Bât. 407, Institut National des Sciences Appliquées de Lyon, 20, Avenue Albert Einstein.69621 Villeurbanne Cedex.France
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Abstract

Until now, the use of untreated polyester fibres in concrete has been delayed because these fibres are not alkali-resistant. To understand the fundamental mecanisms of degradation of such fibres in a cementitious matrix, some physico-chemical experimental techniques (SEM - EDAX - I.R. Spectrometry) associated with flexural tests were used. The degradation of polyester is caused by a saponification reaction and the toughness of the fibre-reinforced composite is quickly reduced.

To prevent such a damage and develop tougher composites, the authors modified the cementitious matrix. Adding burnt clays (kaolin and montmorillonite) to OPC enabled the polyester fibre to withstand the alkaline attack.

Type
Research Article
Copyright
Copyright © Materials Research Society 1991

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References

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