What are the quality defects of concrete and how to deal with them?

Common quality defects of concrete: honeycomb, pits, holes, interlayer, cracks, exposed tendons, rotten roots, formwork expansion, displacement, missing corners and edges, staggered platform, sagging, etc. Treatment measures: template expansion, displacement, dislocation and missing corners and edges belong to template construction problems. It is avoidable to control the quality of woodworking construction, strictly control the geometric dimensions, and strengthen and fasten the formwork support, so that it is not easy to dismantle the formwork prematurely. There is no good way to repair it, so we can only chisel off the redundant part and fill up the defective part with cement mortar. The pits should be repaired, coated with anti-crack mortar and maintained in time. The repair of honeycomb sandwich needs to chisel loose macadam concrete, compact it with high-hardness concrete and maintain it in time.