Performance of RC slabs under the combined effect of applied loads and restrained shrinkage

Miguel Azenha, José Granja, José Gomes, R. Carvalho, Behzad Zahabizadeh, Ali Edalat-Behbahani, Rui Faria, L. Leitão, Carlos Sousa, Dirk Schlicke

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Cracking control in reinforced concrete (RC) is a key factor to ensure proper service life behaviour. However, current design recommendations are unable to provide straightforward methodologies for crack width prediction in RC structures subjected to the combined effects of applied loads and restrained deformations, which is a common situation in civil engineering. This is motivated by the lack of knowledge about the complex interactions that take place between self-imposed deformations, viscoelasticity and the effects of applied loads in the process of crack development. A major challenge in studying these combined effects is the validation of numerical simulations with real scale experimental data. For that purpose, an experimental system for testing real scale RC slabs subjected to the above-mentioned conditions was developed. This system is capable of inducing a prescribed axial restraint to the slab, in correspondence to a high restraint degree that induces cracking in view of expectable shrinkage. At the same time, the setup enables the application of vertical loads. The experimental results obtained in this work allowed for the validation of the test setup, as well as the suitability of the slab geometry and reinforcement.
Original languageEnglish
Title of host publicationProceedings of SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
Pages303 - 308
Volume1
ISBN (Electronic)978-2-35158-203-9
DOIs
Publication statusPublished - 2018
EventInternational Conference on Interdisciplinary Approaches
for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time
- Funchal, Portugal
Duration: 24 Oct 201826 Oct 2018
http://www.synercrete.com

Conference

ConferenceInternational Conference on Interdisciplinary Approaches
for Cement-based Materials and Structural Concrete
Abbreviated titleSynerCrete’18
CountryPortugal
CityFunchal
Period24/10/1826/10/18
Internet address

Fields of Expertise

  • Sustainable Systems

Treatment code (Nähere Zuordnung)

  • Basic - Fundamental (Grundlagenforschung)

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