ANALYSIS OF THE TENSILE RESPONSE OF TEXTILE REINFORCED CONCRETE USING DIGITAL IMAGE CORRELATION TECHNIQUE COMBINED WITH MULTI-SCALE STOCHASTIC MODELLING

Author(s): Yingxiong Li, Rostislav Chudoba, Václav Sadílek, Rostislav Rypl, Miroslav Vořechovský
Book Title: FERRO-11 – 11th International Symposium on Ferrocement and 3rd ICTRC - International Conference on Textile Reinforced Concrete
Editor: Wolfgang Brameshuber
Print-ISBN: 978-2-35158-152-0
e-ISBN: 978-2-35158-153-7
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 141-148
Total Pages: 8
Language: English

Abstract: Textile reinforced concrete (TRC) components exhibit multiple cracking leading to strain hardening behavior under uniaxial tension. In this paper, the method for characterization of the tensile response of TRC capturing the interaction between the matrix cracking and local bond behavior between the matrix and textile fabrics is presented. By combining advanced experimental and modelling approaches the tensile response of TRC specimens can be re-produced in terms of elementary damage mechanisms in the heterogeneous material structure. In particular, the data obtained by digital image correlation technique is used for automated detection of crack initiations in the tested zone of the specimen during the load-ing. The data describing the history of cracking including the quantitative characteristics (positions and crack widths) serve as an input for the numerical simulation of the fragmentation process using a multi-scale stochastic cracking model. The micro-scale effects occur-ring during the debonding process in the vicinity of a crack are described using the representative crack bridge model. As a result, the crack bridge behavior is calibrated in the con-figuration relevant for the behavior of structural components. Validation of the model has been performed by comparing the model prediction with test results obtained for specimens with modified reinforcement ratio.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00