Dr Mihail Petkovski
Lecturer in Structural Dynamics
Department of Civil and Structural Engineering
Sir Frederick Mappin Building
Mappin Street, Sheffield, S1 3JD
Telephone: +44 (0) 114 222 5759
Fax: +44 (0) 114 222 5700
By investigating and understanding the properties of concrete under elevated temperatures, we can ensure the material used in nuclear reactor shields is more resilient to catastrophic events.
dr mihail petkovski
After graduating from Saints Cyril and Methodius University of Skopje, Macedonia in 1982, Mihail Petkovski worked for 11 years in the Institute for Earthquake Engineering and Engineering Seismology (IZZIS) in Macedonia, as a research associate (1982-1990) and lecturer (1990-1993). During this time, he completed an MSc in Earthquake Engineering. Mihail joined our Department in 1993 as a PhD Student, was employed as a research associate in 1997, and was appointed Lecturer in 2007.
Mihail’s research concentrates on the use of concrete at elevated temperatures, particularly when used in nuclear engineering, and the effects of heat-load regimes on the mechanical properties and changes in the microstructure of concrete. By developing this understanding of the behaviour of concrete under a variation of loads, temperatures and moisture conditions, we can develop safer and more economical nuclear power plants. The analysis of large and complex concrete structures, such as nuclear reactor shields, requires an understanding of what happens at the micro-scale. Mihail’s experiments provide the link between the processes that develop in the concrete microstructure and the behaviour of large concrete structures. His results are used to build advanced computer programmes for simulating real-life situations.
During his time as a research associate in the Department, Mihail developed mac2T, Sheffield’s unique facility for multiaxial compression of concrete at elevated temperature. He designed and commissioned the hardware and wrote the software for data acquisition and control of the rig. mac2T has been used for over 300 complex multi-stage experiments, in a succession of research projects funded by EPSRC, EU, UK government and Industry (Nuclear Electric/British Energy, MOD/QinetiQ).
Mihail’s work also extends in earthquake engineering of multi-storey buildings. He investigates structural systems designed to improve the seismic behaviour of buildings, such as the connections and plastic hinge regions in steel and concrete frames. He also works on systems that could control the seismic response of structures through semi-active control.
- Optimum performance of structural control with friction dampers. Engineering Structures, 172, 154-162. View this article in WRRO
- The effect of concrete composition on laser scabbling. Construction and Building Materials, 111, 461-473. View this article in WRRO
- An experimental investigation of laser scabbling of concrete. Construction and Building Materials, 89, 76-89. View this article in WRRO
- Centralized semi-active control of post-tensioned steel frames. Earthquake Engineering & Structural Dynamics, 44(1), 79-100. View this article in WRRO
- Pore space and brittle damage evolution in concrete. Engineering Fracture Mechanics, 110, 378-395.
- Cyclic behaviour of bolted cold-formed steel moment connections: FE modelling including slip. Journal of Constructional Steel Research, 80, 100-108.
- Experimental detection of damage evolution in concrete under multiaxial compression. Journal of Engineering Mechanics, 139(5), 612-628.
- Development of cold-formed steel elements for earthquake resistant moment frame buildings. Thin-Walled Structures, 53, 99-108.
- Experimental work on cold-formed steel elements for earthquake resilient moment frame buildings. Engineering Structures, 42, 371-386.
- Ductile moment-resisting frames using cold-formed steel sections: An analytical investigation. Journal of Constructional Steel Research.
- Effects of stress during heating on strength and stiffness of concrete at elevated temperature. Cement and Concrete Research, 40, 1744-1755.
- Strains under transient hygro-thermal states in concrete loaded in multiaxial compression and heated to 250 °C. Cement and Concrete Research, 38(4), 586-596.
- Apparatus for testing concrete under multiaxial compression at elevated temperature (mac2T). Experimental Mechanics, 46, 387-398.