%A Молодід, О. С. %A Резніченко, І. В. %D 2020 %T TECHNOLOGY FOR SEALING JOINTS BETWEEN PRECAST REINFORCED CONCRETE RINGS WITH SPT® RESINS POLYURETHANE MATERIALS BASED ON THE RESULTS OF EXPERIMENTAL STUDIES %K %X Technology for sealing joints between precast reinforced concrete rings with SPT® Resins polyurethane materials based on the results of experimental studies Annotation. The results of research on the technology of sealing joints between precast concrete rings using injection in the cavity of SPT® Resins polyurethane material are presented. To carry out experi mental research, a special stand was designed and assembled with the help of which conditions close to real ones were created. The main objective of the research was to prepare the tops of the joint cavities before injecting the polyurethane material to prevent it from leaking out. To do this, the joint between the rings was closed with a metal rim, and the gaps between the ring and the rim were filled with: moun ting foam; hollow rubber seals, or polyurethane seals. In addition, one of the joints was filled by spray ing SPT® polyurethane material into the joint with a spray gun. The tops of some joints were filled with mounting foam at 4050 mm, or with a polyurethane seal (50 mm), followed by pressing it with the top rim. The last technological solution was to install a compression rim at the joint, on the edge of which a rubber hollow seal is pasted. As a result of the research, it was found that all the technological solutions under study for sealing the joints between precast concrete rings in the case of injection of SPT® Resins polyurethane material in them, can achieve a good result, namely, fill the cavities by 9599 %. An exception is the technological solution in which the joint was filled with a spray gun filled with SPT® Resins polyurethane material, while the cavity was filled by a little more than 50 %, which is not acceptable. %U https://ndibv-building.com.ua/index.php/Building/article/view/285 %J Building production %0 Journal Article %R 10.36750/2524-2555.69.47-53 %P 47-53%V 1 %N 69 %@ 2524-2555 %8 2020-10-30