The Code for Design of Building Foundations states in the soft foundation treatment clause that "construction waste or stable industrial waste with good uniformity and compactness can be used as the bearing layer."
Construction waste treatment method
1. Use waste building concrete and waste masonry to produce coarse and fine aggregates, which can be used to produce concrete and mortar with corresponding strength grades or to prepare building materials such as blocks, wallboard and floor tiles. After adding solidified materials, coarse and fine aggregates can also be used for highway pavement base.
2. Aggregate produced from waste bricks can be used to produce recycled bricks, blocks, wallboard, floor tiles and other building materials.
3. Dregs can be used for road construction, pile foundation filler, foundation, etc.
4. For the waste wooden construction waste, the wood that has not been obviously damaged can be directly used to rebuild the building, and the seriously damaged wooden components can be used as raw materials for wood recycling boards or papermaking.
5. Waste pavement asphalt mixture can be directly used for recycled asphalt concrete in a proper proportion.
Extended data
Roadbed filling and excavation protection
The terrain along the road is uneven. For low-filled sections with filling height less than 1.5m and shallow-cut sections with excavation height less than 0.8m, it is considered to dig from the original ground to the bottom of the roadbed (that is, before the pavement structure is built, 4% quicklime soil shall be replaced within 0.8m below the road groove).
The subgrade in this section is mainly filled with less excavation sections, and the height of filling and excavation is not more than 8m. When the filling height is less than 3m, spray seeding and grass planting shall be adopted for protection. When the height of the filled soil is 3m and below, and the thickness is 5m and below, the three-dimensional net is used to protect the grass; When the filling height is H & gt5m, it is verified that it is a pond section with pond subgrade protection.
When the subgrade is located in the pond area, the slope below constant water level +0.5m will be protected by mortar rubble, and the slope above constant water level +0.5m will be protected by hollow brick planting grass. Before subgrade construction, temporary cofferdam with woven bag shall be set. The excavated slope is protected by spraying and planting grass, and ditches and berms are set at the edge of the shoulder.
Baidu Encyclopedia-Code for Design of Building Foundation
Baidu Encyclopedia-Technical Specification for Highway Subgrade Construction
People's Network-Henan promotes the recycling of construction waste.