Department of Civil and Structural Engineering
Sir Frederick Mappin Building
Zahran completed his BSc & MSc in 2012 in Civil Engineering from Sultan Qaboos University, Sultanate of Oman. During his Masters, he worked as a research and teaching assistant for two years. The main two research projects he was involved were: 1) The Beneficial Applications of Spent Catalyst Generated at Mina Al-Fahl and Sohar Refineries and 2) The Effect of Local Aggregates on the Properties of Concrete at Elevated Temperatures. After that, he worked in Artelia Group as a Site Inspector (Civil Engineer) for another two years until he joined the University of Sheffield in October 2014 for his PhD studies. During his site work he was responsible for the supervision of the construction of water tank structures and associated pipelines and facilities. Zahran completed his PhD studies successfully in August 2018 subjected to minor corrections.
Recent activities and achievements
Project title: Controlling Shrinkage and Crack Widths in RC Structures Using Fibres
- Understand free and restrained shrinkage contributions in crack width calculations
- Control crack width by using additional steel fibres and accounting for non-uniform shrinkage
- Examine the effect of reused fibres
- Reduce the use of conventional rebar in concrete
- Apply the knowledge to water retaining structures
Tasks and methodology: Shrinkage of free and restrained concrete specimens with different blends of steel fibres will be measured and compared. Hybrid reinforcing methods will be used to control cracking such as steel rebar, manufactured steel fibres and recycled steel fibres from post-consumer tyres. Large scale beams will be tested to assess crack widths and crack spacing during flexural loading. The results will be analysed and compared with FEA and other concrete analysis tools. The results will be used to develop new equations for crack width calculation.
- Better understanding of effect of steel fibres on shrinkage and cracking
- Quality experimental results on concrete shrinkage and cracks
- Models and design equations to predict shrinkage cracking
Supervisor: Prof. Kypros Pilakoutas