A High-Performance Repair Mixture to Restore and Protect Damaged Concrete Structures

In cold regions, one of the major problems is frozen soils, which periodically thaw unevenly, which negatively affects the stability and integrity of concrete structures. The research area is the construction in cold regions. It is shown in the paper that modified repair solutions based on a modified repair mixture have a double effect: penetration effect and protective one. The penetration effect of the mortar mix ensures an increase in compressive strength by two classes, water resistance by two grades and frost resistance by 100 cycles to the loosen concrete base. Repair compositions used as a protective material have high crack resistance, and they are corrosion-resistant materials relative to carbon dioxide and magnesia corrosion. At the same time, they are characterized by high adhesive strength to the concrete base, creating the integrity of the restored base and protective repair composition. The modified repair mix possesses highly effective protective properties in relation to the concrete basis, due to high indicators of durability, crack resistance and corrosion resistance.