| Abstract [eng] |
The master's thesis analyzes beta-type phosphogypsum material from the waste landfill of the phosphate fertilizer company "Lifosa" in Kėdainiai. After conducting this study, the composition of beta-type phosphogypsum material from the waste landfill of the phosphate fertilizer company "Lifosa" in Kėdainiai will be known. This will allow us to see what mineral and chemical elements are in the composition of the phosphogypsum from this landfill and will provide an opportunity for Lithuanian scientists to compare it with alpha-type phosphogypsum from the same fertilizer company. Also, during this study, several forming methods will be performed, which will allow us to study the mechanical properties of this material. One of these forming methods is being tested in a completely new way, which creates the opportunity to discover a new alternative for forming samples. Thus, after studying all these areas, with the available data, it will be possible to continue scientific research in order to raise the use of phosphogypsum to a new higher level in the construction industry. During the final work, the chemical and mineral composition of the material, as well as the physical and thermal properties of the material were analyzed through various studies and analyses. In the work, samples were produced using casting and press-forming methods and their mechanical properties were studied. Based on the obtained strength results, the possibilities of using this material in the production and processing of building materials were examined. |
