First of all, the common technology of applying cement-based repair systems is briefly outlined. Then, the concept of separation of assignments of concrete in a reinforced concrete element is presented. Stress distributions in a drying cement-based coating are considered. Shrinkage…
First of all, the common technology of applying cement-based repair systems is briefly outlined. Then, the concept of separation of assignments of concrete in a reinforced concrete element is presented. Stress distributions in a drying cement-based coating are considered. Shrinkage stresses in the coating have to be balanced by fracture energy and strain softening of the material in order to avoid crack formation. Fracture mechanics parameters of the interface have to be high enough to avoid delamination. Repair systems and protective coatings can be otpimized with respect to rate of carbonation or capillary suction (chloride penetration) but also with respect to crack formation and delamination. This approach has been successfully applied to provide practical solutions.