Stress redistribution mechanism in concrete elements with polymer flexible joint: experimental results / Łukasz Zdanowicz, Marcin Tekieli, Arkadiusz Kwiecień // W: SynerCrete’18: Interdisciplinary ... więcej

Stress redistribution mechanism in concrete elements with polymer flexible joint: experimental results / Łukasz Zdanowicz, Marcin Tekieli, Arkadiusz Kwiecień // W: SynerCrete’18: Interdisciplinary Approaches for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time, Funchal, Madeira, Portugal, 24-26 October 2018. Vol. 1 & 2 / ed. by Miguel Azenha [et al.]. – Paris : RILEM Publications S.A.R.L., 2018. – S. 1115-1120 : fot., tab., wykr. – Tryb dostępu: https://synercrete.com/wp-content/uploads/2018/10/SynerCrete18_Proceedings.pdf. – Bibliogr. 8 poz., Abstr. – DOI: 10.5281/zenodo.1405563 (całość). – e-ISBN 978-2-35158-203-9 (Vol. 1&2). – ISBN 978-2-35158-202-2 (Vol. 1&2). – ISBN 978-2-35158-211-4 (Vol. 1). – ISBN 978-2-35158-212-1 (Vol. 2)

This paper describes the application of a Polymer Flexible Joint (PFJ) as a method of repairing concrete members. Prismatic specimens were concreted and tested in four-point bending up to failure to simulate ... więcej

This paper describes the application of a Polymer Flexible Joint (PFJ) as a method of repairing concrete members. Prismatic specimens were concreted and tested in four-point bending up to failure to simulate damage. After failure they were repaired with PFJ with PT-type polymer and tested in flexure again. The aim of the research was to assess the repair effectiveness regarding load bearing capacity and strain capacity before and after repair and to show the stress redistribution phenomenon. Furthermore, during the tests two methods of measurements were applied – conventional measurements with extensometers and Digital Image Correlation (DIC) method. Results of load – crack mouth opening displacement (CMOD) and load – displacement obtained from both methods were compared and their compliance is presented. Moreover, it is shown that the DIC method is capable of presenting the developing crack pattern even before the maximum force is achieved. Failure mode can be thus better described and understood. Finally, the repair effectiveness was calculated as 87% in terms of load-bearing capacity and 278% in terms of strain capacity. The phenomenon of stress redistribution in concrete was explained and described.