On March 11-22, 2019, a Russian student from Kalashnikov State Technical University, Aleksandr Gumenyuk (Александр Гуменюк), was trained at the AdMaS Center. As part of this internship, he worked on his master’s thesis devoted to extending durability and optimizing the mechanical properties of sulfur-containing cement composites. During his internship he used mainly computer tomography and scanning electron microscopy to study the microstructure of the materials being developed.