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PhD. Topics

Institute of Construction and Architecture

The Effect of chemical composition of concrete on its long-term performance in irradiated environment
PhD. program
Inorganic technologies and materials
Name of the supervisor
Prof.Dr.Ing. Martin-Tchingnabé Palou
Receiving school
Faculty of Chemical and Food Technology SUT in Bratislava
The main goal of the PhD study is to determine the relationship between chemical composition of individual concrete component a durability of concrete in environment with long term irradiation. Another objective is to assess the impact of chemical, mechanical and physical changes induced by radioactive radiation on the technological properties of concrete structures. Concrete is a basic construction and protective material in environments exposed to radiation (alpha, beta, gamma neutron radiation), such as in laboratories, hospitals, and nuclear power plants. It contains various fillers, additives, admixtures and aggregates bonded together by cementitious matrix. The concrete matrix consists mainly of CaO, SiO2, Al2O3, Fe2O3 bonded in the form of hydrates, which effectively absorb radiation and slow down the rapid rays during flexible and inelastic collision. The attenuation (absorption) of radiation depends on the content of the crystalline water in the material from which the concrete shielding is composed. Collisions and absorbed radiation cause physical and chemical reactions in concrete, which may affect its technological properties.