The basic requirements for the curb stone at the construction site
2019-04-11
The basic requirements for the processing of stone into roadside stone at the construction site.
The curb should be consistent with stone, without cracks and weathering. The ultimate compressive strength of granite water retention should be no less than 100 MPa, the wear rate of Los Angeles method is less than 30%, and the wear rate of Defar method is less than 5%. The radioactive level of the stone curb should meet the radioactive specific activity CRae ≤ 1000 Bq / kg radium equivalent concentration.
The curb should be anchored and stable, so that the line is straight, straight and without folds. The top surface should be flat and free of faulty teeth. The owner's request must not be cemented with cement mortar.
The curb must be installed before the asphalt surface is constructed and protected during the construction of the asphalt surface to prevent pollution.
After the curb is buried, the backfill material should be compacted or protected to prevent deformation during the construction of the surface layer. It is strictly forbidden to bury the edge stone after paving the asphalt surface layer.
The curb stone transported to the construction site shall be inspected again, and should be handled with care to avoid damage, unsatisfactory strength, inconsistent color, 5 mm in appearance size error, lack of edges, corners, pits, cracks, inconsistent colors, etc. Do not use if the test fails.
The curb should be consistent with stone, without cracks and weathering. The ultimate compressive strength of granite water retention should be no less than 100 MPa, the wear rate of Los Angeles method is less than 30%, and the wear rate of Defar method is less than 5%. The radioactive level of the stone curb should meet the radioactive specific activity CRae ≤ 1000 Bq / kg radium equivalent concentration.
The curb should be anchored and stable, so that the line is straight, straight and without folds. The top surface should be flat and free of faulty teeth. The owner's request must not be cemented with cement mortar.
The curb must be installed before the asphalt surface is constructed and protected during the construction of the asphalt surface to prevent pollution.
After the curb is buried, the backfill material should be compacted or protected to prevent deformation during the construction of the surface layer. It is strictly forbidden to bury the edge stone after paving the asphalt surface layer.
The curb stone transported to the construction site shall be inspected again, and should be handled with care to avoid damage, unsatisfactory strength, inconsistent color, 5 mm in appearance size error, lack of edges, corners, pits, cracks, inconsistent colors, etc. Do not use if the test fails.
Usually, the roadside stone uses mostly granite, then the bluestone sandstone, and the basalt has a part. The marble does not need to be a roadside stone. Common granite tartars are gray hemp, white hemp, soothing red, sesame black, bluestone and so on.
