DEGRADATING CONCRETE AND REINFORCED CONCRETE BUILDING STRUCTURES AND LONG-TERM STRUCTURES

The problems of degradation concrete and reinforced constructions buildings long operation are formulated on the basis performed field researches its urgency is noted in work. authors analyzed a number works this problem. In particular, results technical diagnostics many structures, both newly built long-term operation, described. necessity periodic noted. Based these studies, main factors that significantly affect reduction load-bearing capacity structures summarized found they as follows: design errors, defects shortcomings construction operational structures. Also, using modern technologies materials, identified benefits their use for repair restoration at facilities. Relevant conclusions have been research works. It established to prevent loss it necessary study residual life reliability durability, which were exposed aggressive air, soil water. reason decrease strength beams, operated an environment, was error corrosion protection Reinforcement injection filling dry cracks, crevices hidden cavities stratifications other damage beams slabs with fluid polyurethane compositions, allowed extend service Polymer Cement Concrete system glued composite materials ensured further normal monolithic floor residential building. Recommendations sequence operations operation.