Calculation of crack widths with the (sigma-epsilon) method

Title: Calculation of crack widths with the (sigma-epsilon) method
Author(s): D. Dupont, L. Vandewalle
Paper category : conference
Book title: International RILEM Workshop on Test and Design Methods for Steelfibre Reinforced Concrete
Editor(s): B. Schnütgen and L. Vandewalle
Print-ISBN: 2-912143-38-1
e-ISBN: 2351580168
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 119 - 144
Total Pages: 26
Nb references: 8
Language: English

Abstract: Durability of concrete is in a great extent determined by the crack widths that are formed in the structure and that allow water to infiltrate in the concrete so that corrosion of the reinforcement bars can occur. This paper concerns the calculation of crack widths in beams containing longitudinal reinforcement and steel fibres. Two calculation methods are explained. The first is the calculation method that is proposed by Rilem TC162-TDF. This method is a semi-empirical method, based on the approach followed by Eurocode 2 for normal concrete. The second method is a more fundamental approach that considers the interaction between the concrete and the reinforcement bars. Both calculation methods have been compared with experimental results of 19 full-scale beams. The investigated parameters were the reinforcement ratio, the fibre content, the fibre type and the shear span to depth ratio. The comparison between experimental and theoretical results shows that for both models a relatively good prediction can be found of the average crack width.

Online publication: 2003-02-15
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2351580168.009