Restoration of Ceilings in Buildings Damaged as a Result of Over-Design Impacts, While Preserving the Established Urban Environment

This article deals with the issue of restoration and modernization of buildings that have been damaged, inter alia, as a result of warfare. These facilities largely have cultural values, and the need to revitalize them is a priority for society. Consequently, it is important to conduct research into the methods of repairing built structures and the results of their implementation. The article considers the issues of restoring inter-floor ceilings damaged due to off-design impacts. These ceilings are most often made of reinforced concrete hollow-core slabs. Existing repair methods do not solve the issue of restoring the structural integrity and geometric parameters of these slabs while at the same time leading to undesirable changes in the spatial and geometric parameters of the building interior. Therefore, finding a way to restore the operational suitability of damaged reinforced concrete hollow-core slabs is an urgent task. The hypothesis of solving the restoring problem of damaged hollow core reinforced concrete slabs by installing reinforcing cages inside the slab voids with the formwork installation inside the voids (damaged areas) and filling the voids with high-fluidity concrete was tested. Experimental studies were conducted to substantiate the possibility of using this method. Based on the data obtained during the experiments, a damaged floor slab was brought into operational condition at one of the construction sites. After operability restoration, this slab has been successfully operated for more than two years, which indicates the correctness of the selected design and technological solutions and the possibility of using this technology to restore the operability of damaged reinforced concrete slabs.