Concrete remains the backbone of modern construction due to its strength, durability, and cost-effectiveness. However, the environmental impact of Ordinary Portland Cement (OPC), the primary binder in concrete, is significant, contributing to 5–8% of global man-made CO₂ emissions. As urbanisation and infrastructure demands grow, the need for sustainable alternatives becomes urgent.

This PhD project at Ulster University, Belfast Campus, investigates the fire performance of Alternative Cementitious Material (ACM)-based concrete, aiming to advance sustainable and resilient construction practices. ACMs such as Alkali Activated Binders (AAB), Calcium Sulfoaluminate (CSA), Calcium Aluminate Cement (CAC), Pulverised Fly Ash (PFA), Metakaolin (MK), and Silica Fume (SF) are increasingly considered for their lower carbon footprint and potential to replace OPC in buildings, bridges, and pavements.

While ACM-based concrete has been widely studied for its mechanical properties at ambient temperatures, its behaviour under fire conditions is less understood. This research will rigorously test proven ACM concrete mixes for mechanical durability and microstructural properties using advanced techniques like Thermogravimetric Analysis (TGA), Fourier Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy (SEM). The project will then evaluate the fire response of concrete cubes and structural elements (such as hollow-core slabs and wall panels) made with ACMs, comparing their performance to conventional concrete under elevated temperatures.

The outcomes will provide critical insights into the fire resilience of ACM-based concrete, informing strategies to enhance safety and sustainability in construction. By promoting low-carbon materials, the project supports global efforts to reduce construction-related CO₂ emissions and encourages the adoption of green building practices for longer-lasting, environmentally responsible structures.

Applicants should have a strong background in civil engineering, materials science, or environmental engineering, with relevant laboratory and analytical skills. The project is supervised by Dr N Alam and Prof A Nadjai, experts in fire engineering and concrete technology. The successful candidate will join the Faculty of Computing, Engineering and the Built Environment at Ulster University, benefiting from state-of-the-art research facilities and a collaborative academic environment.

The application deadline is February 27, 2026. For further details and to apply, visit the project page or contact the faculty directly. This is an excellent opportunity for motivated researchers passionate about sustainable construction and material innovation.