Load-bearing behaviour of textile reinforced concrete with short fibres

Author(s): M. Hinzen, W. Brameshuber
Paper category: Conference
Book title: 8th RILEM International Symposium on Fiber Reinforced Concrete: challenges and opportunities (BEFIB 2012)
Editor(s): Joaquim A.O. Barros
Print ISBN: 978-2-35158-132-2
e-ISBN: 978-2-35158-133-9
Publisher: RILEM Publications SARL
Pages: 254 - 266
Total Pages: 12
Language: English

Abstract: 
Short fibres have a big influence on the load-bearing behaviour of textile reinforced concrete. Especially micro-fibres seem to be able to increase the first crack stress of the fine grained concrete by delaying the micro-cracking process during loading. After the first crack of the matrix a phase of multiple cracking follows. In this phase normal textile reinforced concrete shows a large increase in strain and a rather low increase in stress, which leads to problems in terms of serviceability. After the crack formation phase the stress-strain behaviour describes only a widening of the existing cracks until the textile fails. At first, the paper describes the ability of short fibres to increase the first crack strength of fine grained concrete after different storage conditions. In addition, the first crack strength of concrete with only textiles and with a combination of textiles and short fibres is being evaluated. The increase in strength leads to a higher load level covering the entire gradient of the stress-strain curve. In state II the behaviour is influenced by an interaction between short fibres and textile. Finally, the local stiffness, the load level as well as the cracking behaviour of textile reinforced concrete with short fibres are described.

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