The technology of crack repair by polymer composition

Introduction. During the inspection of buildings and structures development design documentation for restoration works it was found that there is a need to provide recommendations or develop solutions repair work. These either are not regulated by standards may be technically economically inefficient.
 Problem Statement. The most common defect tension zone in reinforced concrete beams, floor slabs roof cracks. Injection technology normally used it. However, case large number small cracks, this time consuming.
 Purpose. Development new repairing with This will ensure maximum filling cracks polymer compositions their subsequent bonding.
 Materials methods. A factors affect have been identified from analysis scientific technical literature. special device ‘tray’ produced experimental research. It attached lower system ties props. mix fill fed into tray under pressure. By means changing experiment conditions strengthening level previously destroyed samples were set.
 Results. As result, composition achieved within 5-10 minutes supply at pressure range 0.5-0.6 atmospheres (atm). repaired re-applied destructive force work structural temperature 20 ± 2 оС dry state structure.
 Conclusions. located on surface horizontal has developed. established presence structure (the width up 0.2 mm) developed effective, widths 0.3 0.8 mm advisable use injection whereas larger than hybrid should applied.