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

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem Konferenzband

Abstract

One of the key factors towards a proper service life behaviour of reinforced concrete (RC) structures is the adequate control of crack widths by the reinforcement, as to ensure adequate durability. However, currently existing methodologies for reinforcement design are not satisfactory in providing instructions for adequate control of crack widths when RC members are subjected to high restraints to deformation (e.g. due to shrinkage), in combination with vertical loads (both dead and live). This is a typical situation in RC slabs applied in buildings. The reason of the unsatisfactory character of current design provisions and recommendations is related to the very high complexity of phenomena at interplay, particularly the non uniform distribution of moisture in concrete that inherently brings non-uniform distribution of stresses (in space and time) due to drying shrinkage, which in turn have important influence in the process of crack development. This paper intends to contribute for deepening knowledge on these processes by deploying a thermo-hygro-mechanical simulation framework, which is described and validated, to the analysis of a highly restrained slab in service load conditions.
Originalspracheenglisch
TitelProceedings of SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
Seiten303 - 308
Band1
ISBN (elektronisch)978-2-35158-203-9
DOIs
PublikationsstatusVeröffentlicht - 2018
VeranstaltungInternational Conference on Interdisciplinary Approaches
for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time
- Funchal, Portugal
Dauer: 24 Okt 201826 Okt 2018
http://www.synercrete.com

Konferenz

KonferenzInternational Conference on Interdisciplinary Approaches
for Cement-based Materials and Structural Concrete
KurztitelSynerCrete’18
LandPortugal
OrtFunchal
Zeitraum24/10/1826/10/18
Internetadresse

Fields of Expertise

  • Sustainable Systems

Treatment code (Nähere Zuordnung)

  • Basic - Fundamental (Grundlagenforschung)

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