PhD Position - Structural analysis and optimisation of fully-recycled concrete structures

100%, Zurich, fixed-term

Greenhouse gas (GHG) emissions from material extraction, manufacturing of construction products, as well as construction and renovation of buildings are estimated at 5-12% of global. Concrete, as we know it today, is one of the most relevant construction materials in terms of carbon foot, raw materials usage, and structural usage. Huge amounts of GHG are emitted during concrete production, mainly because of the high calcination temperatures needed to produce cement clinker (about 40%) and to decarbonise limestone (about 60%). This, in total, amounts to about 8% of global CO2 emissions. Also, one m³ of concrete requires 2,6 tons of construction minerals, so concrete construction accounts for about 50% of all material extracted for. Climate-neutral concretes and applications are a global research theme of high interest, but none of the current concepts have a full net-zero-carbon impact because they bring partial and mostly fragmented solutions that cannot stand up to the technical demands of AEC.

The Block Research Group (BRG) in the Institute of Technology in Architecture (ITA) within the Department of Architecture (D-ARCH) at ETH Zurich, led by Prof. Dr. Philippe Block and Dr. Tom Van Mele, focuses on the structural design of efficient and innovative structures inspired by the master builders of the past. BRG’s research combines the concepts of “strength through geometry” and “material effectiveness” with computational design and digital fabrication methods to reduce carbon emissions and resource consumption. Through a project-driven approach, these base principles and methodologies are continuously tested against real-world requirements and constraints in diverse global contexts.

Project background

The CARBCOMN project, funded by the Horizon EIC 2023 Pathfinder Challenges, has created two exciting PhD positions within the Block Research Group. These positions provide an exceptional opportunity to contribute to pioneering zero-carbon concrete structures. Candidates will collaborate closely with both industry and academic partners, leveraging and expanding their expertise to shape a new digital AEC design paradigm. This approach focuses on designing and analysing discrete structural geometries with integrated post-tensioning systems, using fully recycled concrete-like materials. The goal is to enhance circularity and significantly reduce the environmental impact of the AEC industry.

Job description

Start: January 2025

Duration: 4 years

This position will focus on the computational structural design and analysis of discrete structures with integrated post-tensioning systems. It involves developing a calculation model that accurately represents the complex behaviour of these systems, evaluating intermediate stages related to assembly and construction, and evaluating various post-tensioning techniques.

Profile

You have an M.Sc. degree in civil engineering or building engineering/architecture with in-depth knowledge/understanding of the behaviour of unreinforced masonry structures, expert programming skills, and a strong background in computational modelling and optimisation.

• Programming: Proficiency in Python
• Good knowledge of structural engineering software (FEA, DEM)
• Motivation to work in a multidisciplinary and multicultural environment
• This project is embedded within a large European consortium; therefore, excellent written and oral communication are essential
• Language: English

Workplace

Workplace

We offer

• Your career with impact: Become part of ETH Zurich, which not only supports your professional development, but also actively contributes to positive change in society.
• We are actively committed to a sustainable and climate-neutral university.
• You can expect numerous benefits, such as public transport season tickets and car sharing, a wide range of sports offered by the ASVZ, childcare and attractive pension benefits.

We value diversity

In line with our values, ETH Zurich encourages an inclusive culture. We promote equality of opportunity, value diversity and nurture a working and learning environment in which the rights and dignity of all our staff and students are respected. Visit our Equal Opportunities and Diversity website to find out how we ensure a fair and open environment that allows everyone to grow and flourish.

Curious? So are we.

We look forward to receiving your online application with the following documents:

• CV
• Portfolio
• Motivation letter
• 2 letters of recommendation

Please note that we exclusively accept applications submitted through our online application portal. Applications via email or postal services will not be considered.

Further information about the Block Research Group can be found on our website. Questions regarding the position should be sent via email to brg@arch.ethz.ch.