EXPERIMENTAL RESEARCH OF TECHNOLOGY OF HERMETIZING STYLES WITH MATERIALS OF POLYURETHANE SPT RESINS

Abstract

The hereinafter contained results of the research studying the technology of sealing joints bet- ween precast concrete structures when filling in cavities with SPT Resins polyurethane material. To carry out experimental research, a special stand was designed and assembled to create conditions close to the real ones. The main target of the research was to prepare the bottom of the joints prior to the injection of polyurethane material to prevent its leakage. To this end, the bottoms of the seams between membranes were filled with dif- ferent materials in advance, in particular, the polyurethane sealing 10 mm and 20 mm, metal L-steel 25x25x3, L = 1010, fast-hardening adhesive for building (cement based) or mounting foam. As a result of the research, it was found that with a due preparation of the lower parts of joints it is possible to achieve a good result, namely to fill the cavity by 95 — 99% when SPT Resins polyurethane material is pumped under pressure into the cavity.