road

Asphalt penetration is one of the main quality indexes of asphalt. It is an index that indicates the degree of hardness and consistency of asphalt, the ability to resist shear damage, and reflects the relative viscosity of asphalt under certain conditions. At 25 ° C and 5 seconds, under a load of 100 grams, the depth of the standard cone into the asphalt sample vertically is the penetration of the needle, in 1/10 mm.

Asphalt used to pave roads. It can be obtained by regular vacuum distillation of crude oil with appropriate properties, and can also be obtained by shallow oxidation of vacuum residue or propane deasphalting process. It can also be prepared by mixing asphalt of different duction and injection degree

Asphalt used to pave roads. It can be obtained by regular vacuum distillation of crude oil with appropriate properties, and can also be obtained by shallow oxidation of vacuum residue or propane deasphalting process. It can also be prepared by mixing asphalt of different duction and injection degree

Slurry sealing layer truck is a thin layer formed by using mechanical equipment to mix properly graded emulsified asphalt, coarse and fine aggregate, water, fillers (cement, lime, fly ash, stone powder, etc.) and additives into slurry mixture according to the design ratio and spread on the original road surface.

Colored asphalt pavement is a kind of special pavement material that mixes colored particles into asphalt and then lays on the pavement

Each F1 track must be paved with three layers of asphalt, middle and lower, of which the lowest layer is 10 cm coarse asphalt concrete bearing layer, its flatness is less than 8 mm; In the middle is a 4 cm medium grained asphalt concrete bond layer, its flatness is less than 5 mm; The top layer uses 4 cm modified asphalt mixture as the surface wear layer, and the flatness is less than 2 mm.

The paved F1 track cannot have more than 3 points per kilometer of flatness detection, which is much higher than the highway.

Conventional pit repair techniques are mainly hot material repair and cold filling repair, and warm mixing technology is used to ensure compaction, while there are also some special repair methods such as slurry seal/micro-surface material repair

Road repair Keep the road to maintain the performance of the road, restore the damaged part in time, ensure the safety, comfort and smooth driving, save transportation costs and time; Correct technical measures should be taken to improve the quality of the project, extend the service life of the road, and postpone the reconstruction time. With the performance, the damaged part is restored in time to ensure the safety, comfort and smooth driving, saving transportation costs and time; Correct technical measures should be taken to improve the quality of the project, extend the service life of the road, and postpone the reconstruction time.