Durability of polypropylene fibre-reinforced concrete as assessed by oxygen and water permeability

Author(s): A.S. Badr
Paper category: Conference
Book title: 2nd International conference on Microstructural-related Durability of Cementitious Composites
Editor(s): Guang Ye, K. Van Breugel, Wei Sun, Changwen Miao
Print ISBN: 978-2-35158-129-2
e-ISBN: 978-2-35158-123-0
Publisher: RILEM Publications SARL
Pages: 577-585
Total Pages: 8
Language: English

Abstract: 
Oxygen and water permeability coefficients are good indicators of the durability of concrete because they can be used to compare the ability of different concretes to resist the ingress of harmful substances.

In this research, the durability of polypropylene fibre-reinforced concrete (PPFRC) was investigated by studying its oxygen and water permeability. The effects of polypropylene fibre (PPF) and pozzolanic materials such as fly ash (FA) and silica fume (SF) were explored. The oxygen permeability of concrete was assessed using a differential pressure technique by measuring the downstream flow rate of oxygen passing through concrete specimen after achieving a steady flow. The penetration depth method was used to calculate the water permeability.

The results showed that the effect of PPF on permeability was less pronounced compared to the effect of the binder type. Concrete specimens containing silica fume or fly ash had reduced permeability, compared to Portland cement concrete (PCC) with or without fibres.
On the other hand, there was no significant difference in oxygen or water permeability between Portland cement concrete mixes with or without fibres.

Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00