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Project description
Third-cycle subject: Building materials
Unbound granular layers are major components of road structures and their performance controls to a great extent the length of roads service life. Accordingly, understanding the parameters controlling unbound road layers performance is a key factor for pavements durability and for sustainable use of crushed rock materials in road construction. In order to achieve this, there is a need to increase the knowledge on granular material characteristics and degradation mechanisms, and to develop efficient and rapid methods for prediction of their influence on unbound layer performance in the field.
The ultimate goal of this project is to address this need for new analysis tool linking quantitatively unbound material parameters, such as gradation, stone’s shape and mechanical characteristics, to materials performance. This problem will be addressed in this project by developing a discrete element method (DEM)-based approach to evaluate the effect of unbound materials characteristics on its performance with respect to elastic and permanent deformation. In order to calibrate and validate the models, the mechanical behavior of several typical unbound materials will also be investigated experimentally with tri-axial tests. The main intended outcome of the project is a set of improved performance prediction models for unbound road layers.
The Swedish Transport Administration is funding the project for four years. The project will be performed jointly by KTH and The Swedish National Road and Transport Research Institute (VTI). The student will spend several longer research periods at VTI.
What we offer
Eligibility
To be admitted to postgraduate education (Chapter 7, 39 § Swedish Higher Education Ordinance), the applicant must have basic eligibility in accordance with either of the following:
A suitable background for this position is a degree in Mechanical Engineering, Material Physics, Computational Mechanics or Civil Engineering (with a focus on mechanics).
Basic knowledge in solid mechanics, computational modelling and materials is required and a specialization in solids and structures, solid mechanics and/or composite materials is an asset. Numerical modelling (in particular Discrete Element Method) and programming skills are of a great advantage for this position. Previous experience with experimental mechanics is a plus, though not a requirement. In addition to traditional academic merits, a relevant degree project, international experience, and language skills are regarded as advantageous qualifications.
The candidate should be highly motivated for doing scientific research and should have well developed analytical and problem solving skills as well as an interest and curiosity for different types of computational and advanced experimental methods.
Selection
In order to succeed as an doctoral student at KTH you need to be goal oriented and persevering in your work. In the selection of the applicants, the following will be assessed:
After the qualification requirements, great emphasis will be placed on personal qualities and personal suitability.
Target degree: Doctor, 4 years
Information regarding admission and employment
Only those who are or have been admitted to third-cycle studies may be employed as a doctoral student. The term of the initial contract may not exceed one year and may there after be extended. Doctoral students may engage in teaching, research, and administration corresponding to a maximum of 20 % of a full-time position.
Union representatives
You will find contact information for union representatives on KTH's website.
Doctoral section (Students’ union on KTH Royal Institute of Technology)
You will find contact information for doctoral section on the section's website.
Application
Apply for the position and admission through KTH's recruitment system. It is the applicant’s responsibility to ensure that the application is complete in accordance with the instructions in the advertisement.
Applications must be received at the last closing date at midnight, CET/CEST (Central European Time/entral European Summer Time).
Applications must include the following elements:
Other information
Gender equality, diversity and zero tolerance against discrimination and harassment are important aspects of KTH's work with quality as well as core values in our organization.
For information about processing of personal data in the recruitment process please read here.
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Disclaimer: In case of discrepancy between the Swedish original and the English translation of the job announcement, the Swedish version takes precedence.
Type of employment | Temporary position |
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Contract type | Full time |
First day of employment | As agreement |
Salary | Monthly salary according to KTH's doctoral student salary agreement |
Number of positions | 1 |
Full-time equivalent | 100% |
City | Stockholm |
County | Stockholms län |
Country | Sweden |
Reference number | A-2019-1597 |
Contact |
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Published | 12.Sep.2019 |
Last application date | 03.Oct.2019 11:59 PM CEST |