In the master's thesis, the problems discussed are related to the development of temperature while hydrating the concrete mass. When the concrete is hardened, a chemical reaction occurs in which the heat is released and thus increases the temperature in the concrete mass. High temperatures and, above all, uneven distribution of temperatures in the cross-section of the concrete lead to the formation of internal tensions, which allow cracking in the concrete and consequently deteriorates the physical properties of the concrete used. The first part of the master's thesis deals with the technology in connection with the use of optical cables for measuring the temperature, while the second section of master's thesis is devoted to the experimental part, where we installed two concrete specimens with a fiber optic cable in the laboratory and analyzed the development of temperature during the hydration of the concrete. Due to the constraints of the measuring device in the spatial accuracy, it was impossible to determine the precise position of the measurement points at the selected time of the individual measurements, however, there are obvious temperature changes after the cross-section of concrete specimens. Precisely due to the limitation of the measuring device in the spatial accuracy, a new method of mounting an optical cable, which circumvents the aforementioned problems, is presented at the end. The results of the measurements of the new concrete specimen, with the new way of installing the optical cable, will be presented in future scientific publications.
|
