Aarhus University Seal / Aarhus Universitets segl

Crack development and deformation behaviour of reinforced concrete

PhD defence, Tuesday 18 June 2019, Annette Beedholm Rasmussen.

2019.06.18 | Sunitha Satkunam

Annette Beedholm Rasmussen

Cracking in beam subjected to a constant moment

During her studies, Annette has researched the behaviour related to cracking in reinforced concrete and developed an approach to design beams in the serviceability limit state with respect to evaluation of both crack widths, flexural stiffness and deflections.

The proposed approach rests on coherent physical assumptions and the knowledge of the spacing between cracks. Since the crack spacing is a vital part of the approach, this parameter is investigated thoroughly through a comprehensive empirical study of 600 tests, including both beams and uniaxial tensile bars, where crack spacings have been measured in all the test members. The large amount of tests, collected from the existing literature, was required to minimise the randomness associated with cracking in concrete.

The research contributes to the understanding of crack development in tensile and flexural members as well as it improves modelling of reinforced concrete in the serviceability limit state. This creates a stronger connection between modelling of the two limit states (strength and service) and leads to better utilisation of both concrete and reinforcement.

The PhD degree was completed at the Department of Engineering, Civil and Architectural Engineering, Science and Technology, Aarhus University.

This résumé was prepared by the PhD student.

Time: 18 June 2019 at 13:00
Place: Navitas 3210-03.107.

Title of PhD thesis: Modelling of reinforced concrete in the serviceability limit state – A study of cracking, stiffness and deflection of flexural members

Contact information: Annette Beedholm Rasmussen, e-mail: abra@ase.au.dk, tel.: +45 23670263

Members of the assessment committee:
Professor Alejandro Pérez Caldentey, Department of Continuum Mechanics and Structures, Polytechnic University of Madrid, Spain
Professor Gintaris Kaklauskas, Department of Reinforced Concrete Structures and Geotechnique, Vilnius Gediminas Technical University, Lithuania
Professor Sven Gjedde Sommer (chair), Department of Engineering, Aarhus University
Main supervisor:
Professor Lars German Hagsten, School of Engineering, Aarhus University
Language: The PhD dissertation will be defended in English

The defence is public.
The PhD thesis is available for reading at the Graduate School of Science and Technology/GSST, Ny Munkegade 120, building 1521, 8000 Aarhus C.

PhD defence
12183 / i43