Construction waste mainly consists of waste generated from new construction and waste generated from scrapping and demolition. In the process of construction and demolition, the proportion of construction waste produced by buildings with different structural forms is different, and the components are roughly the same. Construction waste can be roughly divided into surplus materials, scrap materials and discarded materials after use, mainly composed of brick, concrete, mortar, pile head, packaging materials, etc., accounting for about 80% of construction waste. The construction waste in demolition project is roughly divided into old buildings and site cleaning waste, mainly composed of brick and stone, concrete components, steel bars, gravel, wood, etc.
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