PhD student Branka Mrduljaš was on a short-term research mission (STSM) at the Slovenian National Building And Civil Engineering Institute, ZAG. Branka stayed at ZAG from January 9 to 20, 2023 to acquire the specific knowledge needed to conduct the research planned within the ReWire project. The objective of the STSM was to acquire knowledge in the field of computed tomography (CT) to determine the distribution of polymer fibers in cement composites. The STSM was led by Dr. sc. Alenka Mauko Pranjić, head of the Institute of Materials. During her visit to ZAG, Branka also participated in the research meeting “SM 400”.