The concrete falls locally on the c

The concrete falls locally on the corners of the structure or components, which is irregular and defective. The cause of the accident:(1) Insufficient watering of the wooden formwork or insufficient humidity, poor maintenance after concrete construction, resulting in dehydration, low strength, or water-absorbing expansion angle of the formwork, and sticky edges and corners during mold removal.(2) During low temperature construction, the side non-load-bearing formwork must be removed in advance.When the template is removed, the corners of the template are hit by external force or heavy objects, or the corners of the template collide due to poor protection.