Дослідження технології ремонту цегляних конструкцій із тріщинами ін’єктуванням

All wall structural elements, regardless of the type of material, sustain damage over time due to various factors require repair and restoration work to extend their service life. An analysis of technical inspection reports has shown that masonry account for approximately 20% of the total number of damaged structures. Of these, about 60% are solid-brick structures, while the rest consist of hollow elements (hollow bricks or ceramic blocks) and aerated concrete blocks. An analysis of scientific and technical literature indicates a lack of data on the repair of cracks in structures made of hollow elements and on studies of how voids are filled with repair materials. Therefore, experimental studies were conducted to determine the quality of crack filling with injection mortar in structures made of hollow bricks and ceramic blocks, and research was also carried out on the possibility of using quartz sand as a crack filler followed by injection with polymeric materials. It was established that injecting cracks in structures made of hollow elements using a cement-based repair injection material effectively and thoroughly fills them. However, it is known that polymeric materials have good penetrating ability and provide better adhesion. Yet their use for filling hollow elements is impractical due to the significant volumes involved. Therefore, the possibility of using quartz sand to fill cracks, followed by the injection of polymeric materials, was investigated. The adhesion strength parameters of the repair material (sand impregnated with a polymer composite) to the substrate indicate the feasibility of conducting similar follow-up experimental studies on hollow elements as well