Influence of Matrix Composition and Short Fibres on the Workability of Fine Grained Fibre Concrete

Title: Influence of Matrix Composition and Short Fibres on the Workability of Fine Grained Fibre Concrete
Author(s): M. Hinzen, W. Brameshuber
Paper category : conference
Book title: International RILEM Conference on Material Science
Editor(s): W. Brameshuber
Print-ISBN: 978-2-35158-106-3
e-ISBN: 978-2-35158-107-0
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 131 - 140
Total Pages: 10
Nb references: 7
Language: English

Abstract: Textile reinforced concrete (TRC) is a new composite material consisting of fine grained concrete and several layers of technical fabrics. In recent years, great advances have been made at the development oft TRC. The required tensile strength is achieved by embedding several layers of textile. Recent developments have shown that the load bearing behaviour of TRC can be significantly improved in terms of first crack strength and ductility by adding short fibres to the concrete matrix. However, the reduction of workability of these fibre concretes is problematic for practical applications. Particularly the use of monofilament fibres constrains the flow behaviour and the penetration of the textiles in the casting method. In order to develop optimised fine grained concrete mixes for the use with short fibres, it is the aim to investigate the influences on the workability systematically. The first part of this study deals with influences of the matrix composition. In the parametric study not only the volume fractions of the components but also very basic parameters like grading curve or particle shape were considered. The investigation results in a new fine grained concrete mix which is presented. The second part describes the reduction of workability by different types of short fibres.

Online publication: 2010-10-21
Publication type : full_text
Public price (Euros): 0.00