New ways of strengthening of compressed reinforced concrete columns by holders applying adhesive coating made of liquid glass

This article presents new ways of strengthening of reinforced concrete columns with the help of coating made of liquid glass to increase the carrying capacity of compressed elements when increasing operation load and in case of defects of a local character. The existing methods for strengthening of concrete columns by holders are imperfect because of their high price and complexity of the device. Thus, this problem continues to be relevant. The existing techniques for strengthening of reinforced concrete columns using modern materials are analyzed, their shortcomings are revealed, the literary and patent information retrieval is carried out. On the basis of identified shortcomings the authors have developed new design solutions to strengthening of reinforced concrete columns by holders using adhesive coating made of liquid glass. The liquid glass has a number of advantages as compared to known materials, namely low price and high adhesive properties. The novelty of the developed design solutions is confirmed by obtaining patents and positive decisions for a patent. The practical and theoretical importance lies in the possibility of using the developed design solutions for strengthening of reinforced concrete columns by holders of reconstructed buildings and structures.