Moisture permeability measurement under reduced barometric pressures

Title: Moisture permeability measurement under reduced barometric pressures
Author(s): G. H. Galbraith, D. J. Kelly, R. C. McLean
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 37
Issue: 269
Issue date: 2004-06-01
Publication year: 2004
Pages: 311 - 317
Total Pages: 7
Nb references: 10
Language: English

Abstract: This paper reports the effects of incorporating high volume fly ash in fiber reinforced concrete.
Fly ash was mixed as a partial fine aggregate replacement of approximately one third of the fines volume.
The fibers were polypropylene or steel fibers at a maximum proportion of 1% by volume of the concrete.
The results showed that fiber reinforced concrete that included high fly ash volume achieved compressive and tensile strength values that are more than double those of concrete without fly ash.
Values of other mechanical properties have also achieved significant increase due to fly ash addition.
It is suggested that a large quantity of fly ash is necessary to enhance the efficiency of fiber reinforcement.
Polypropylene fibers resulted in gains up to 50% while steel fibers achieved gains up to more than 100%.
This enhancement is believed to be due to the microstructural modification and densification in the transition zone between the matrix and the fibers.

Online publication: 2004-04-27
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/13992