Robotic Concrete Spraying for Efficient Repair of Existing Infrastructure

Department of Civil Engineering, University of Birmingham

Dr Bahman Ghiassi

Applications accepted all year round

Self-Funded PhD Students Only

About the Project

The repair and rehabilitation of ageing infrastructure is a critical challenge for the construction sector, particularly in the context of sustainability, safety, and cost efficiency. Robotic concrete spraying has recently emerged as a promising technology for the automated repair of deteriorated concrete structures, offering improved precision, reduced material waste, enhanced worker safety, and the potential for significant reductions in time and carbon emissions compared to conventional repair methods.

Despite its strong potential, the application of robotic concrete spraying for structural repair is still at an early stage and requires further research and development. Key challenges include the optimisation of spray processes and material formulations, control of layer build-up and bonding to existing substrates, performance under complex geometries and loading conditions, and the long-term durability of repaired systems. The integration of sensing, digital control, and feedback mechanisms is also essential to ensure consistent quality and structural reliability.

This PhD project aims to address these challenges by advancing the scientific and technological foundations of robotic concrete spraying for infrastructure repair. The research may cover topics including, but not limited to:

• Material design and rheology optimisation for robotic spraying applications
• Bond behaviour and interface performance between repair material and existing concrete
• Process control, automation, and digital monitoring of robotic spraying systems
• Structural performance and durability of robotically repaired concrete elements

Within this project, the PhD candidate will work on an innovative and highly applied research topic, receive extensive hands-on training in advanced materials testing, robotic manufacturing technologies, and computational modelling, and collaborate closely with internationally recognised academics and industry partners. The project offers a unique opportunity to contribute to the development of next-generation, sustainable repair technologies for existing infrastructure.

We are seeking an enthusiastic and highly motivated home/UK student with good interpersonal skills and a keen interest in research. You must have, or expect to achieve, at least a 2:1 honors degree or a distinction or high merit at MSc level (or international equivalent) in Civil Engineering, mathematics or a related subject. Preference will be given to candidates with educational and/or research experience in engineering. Experience in experimental materials characterisation is essential. The candidate will be expected to have good interpersonal skills. For further details and discussion about the position, please contact Dr Bahman Ghiassi (b.ghiassi@bham.ac.uk).

Funding Notes

This project is only available to self-funded students.