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Pro036

Interactions of cellulose fibres in an autoclaved cement matrix



Title: Interactions of cellulose fibres in an autoclaved cement matrix
Author(s): N. B. Milestone
Paper category : conference
Book title: International RILEM Symposium on Concrete Science and Engineering: A Tribute to Arnon Bentur
Editor(s): K. Kovler, J. Marchand, S. Mindess and J. Weiss
Print-ISBN: 2-912143-46-2
e-ISBN: 2912143586
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 153 - 163
Total Pages: 11
Nb references: 20
Language: English


Abstract: Interactions of cellulose fibre in autoclaved fibre-cement products have been studied. The organic material released from the fibre has little effect on cement hydration and, in an industrial plant, is likely to be offset by the alkaline recycle water used to resuspend the fibres. Degradation of the fibres observed as a decrease in cellulose polymerisation, occurs during pre-autoclave curing. This degradation is catalysed by Ca2+ and accentuated in the presence of O2. Movement of Ca2+ into the fibres occurs during the curing process and there is loss of organic material from the fibres. While the mechanism is not clear, it is speculated that the formation of Ca-hydroxy complexes assists the degradation


Online publication: 2004-02-04
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143586.014