High-temperature thermal expansion of fiber-reinforced cement composites

Authors: E. Vejmelková, P. Konvalinka, R. Černý
Paper category: conference
Book title: Concrete Durability and Service Life Planning – ConcreteLife’09
Editor(s): K. Kovler
Print ISBN: 978-2-35158-074-5
e-ISBN: 978-2-35158-085-1
Publisher: RILEM Publications SARL
Publication year: 2009
Pages: 449 – 456
Total Pages: 8
Language: English

Abstract: The linear thermal expansion coefficient of several fiber-reinforced cement composites is determined in the temperature range up to 1000°C. Glass fibers, carbon fibers, PVA fibers and aramid fibers are used in the preparation of the composites by two different technologies involving vacuum mixing and autoclaving. Experimental results show the positive effect of fiber reinforcement on thermal strain; the fibers are able to prevent the matrix from an excessive volume increase due to their good adhesion. The autoclaving procedure affects the thermal strain in a very significant way; up to 700°C its effect is very positive but for higher temperatures the autoclaved materials undergo thermal shrinkage.

Online publication: 2012-05-16
Publication Type: full_text
Public price (Euros): 0.00