Research

My current research interests revolve around novel developments in sustainable concrete materials, response of concrete structures to monotonic, cyclic and impact loadings, numerical modelling and the development of mechanics-based solutions for reinforced concrete structures.

Rubberised Alkali-activated Concrete

The aim of this research is to develop a more sustainable concrete mix design and study its fundamental mechanical properties. We used industrial waste materials (in this case, fly ash and blast furnace slag) as replacement for cement in concrete. We also used rubber particles from discarded end-of-life tyres as replacement for some of the natural aggregates in the concrete mix design. We then proceeded to characterise the fundamental mechanical properties, including the compressive strength, splitting tensile strength, and flexural strength. We also looked at the monotonic and cyclic compressive stress-strain response.

M. Elzeadani, D. V. Bompa, A. Y. Elghazouli. Monotonic and Cyclic Constitutive Behaviour of Rubberised One-part Alkali-activated Concrete. Construction and Building Materials, 368, 130414. [doi]

M. Elzeadani, D. V. Bompa, A. Y. Elghazouli. (2022). Experimental Assessment and Constitutive Modelling of Rubberised One-Part Alkali-Activated Concrete. Construction and Building Materials, 353, 129161. [doi]

Mechanics-based Solutions for Reinforced Concrete Flexural Members

We used mechanics-based approaches to predict the deflection and flexural capacity of ordinary and plated reinforced concrete beams. The behaviour is modelled while taking into account the development of tensile cracks in concrete as loading is increased. Partial-interaction is assumed between the reinforcement steel and concrete in tension once cracks form. The same partial-interaction principles are assumed between external plates, mainly fibre reinforced polymer (FRP) plates, and concrete. The concrete in compression is modelled by taking into account the full constitutive response, including softening after the peak stress. A segmental analysis approach is used to tie the concrete in compression and the reinforcement in tension. This is then used to find the moment-rotation relationship which is then used to determine the deflection of the member and also the flexural capacity.

M. Elzeadani, Raizal Saifulnaz, M. R., M. Amran, F. Hejazi, M. S. Jaafar, R. Alyousef, H. Alabduljabbar. (2019). Flexural strength of FRP plated RC beams using a partial-interaction displacement-based approach. Structures, 22, 405-420. [doi]

M. Elzeadani, Raizal Saifulnaz, M. R., M. Amran, F. Hejazi, M. S. Jaafar. (2019). Short-term deflection of RC beams using a discrete rotation approach. International Journal of Advanced Structural Engineering, 11, 473-490. [doi]

M. Elzeadani, Raizal Saifulnaz M. R., F. Hejazi, M. Amran, M. S. Jaafar, R. Alyousef, F. Alrshoudi. (2019). Mechanics based approach for predicting the short-term deflection of CFRP plated RC beams. Composite Structures, 225, 111169. [doi]