What is the mode of construction of Grader?
After practice, the pavement construction should take the "five points, second tier and control method, can make the pavement roughness less than 2.5 mm, so as to improve the flatness of the paver paving, the pavement roughness less than 1 mm, sometimes as high as 0.7 to less than 0.5 mm.
Subgrade construction because of the roughness requirements are not very high, generally according to the grader and operator construction experience, directly carry out scraping work. The construction of pavement base (i.e. lime soil and two ash crushed stone) is very strict, because it directly affects the smoothness of asphalt surface and the saving and waste of paving materials.
The construction unit not only do subgrade grader, and use the grader to do (lime and two ash macadam pavement), can also achieve the technical and quality standards of highway design, but must require engineering and technical personnel in peace operation machine hand closely, meticulous construction.
