How should asphalt pavement oil flooding be repaired?
July 18, 2022
Asphalt moves up from the concrete layer, resulting in excessive asphalt on the asphalt pavement, which can easily lead to traffic accidents if not dealt with in time. Affected by high temperature weather, coupled with the action of heavy-duty vehicles, one step of compaction of the road surface will lead to the occurrence of oil flooding. Or rainwater soaks into the asphalt concrete, the asphalt peels off from the aggregate surface and moves upward, and then serious oil flooding occurs on the asphalt road surface.
If there is only a slight oily road section, you can sprinkle stone chips or coarse sand with a particle size of 3~5mm, and roll it with a road roller or a controlled vehicle.
(1) First sprinkle a layer of 10~15mm particle size (or larger) gravel, use a road roller to forcibly press it into the road surface, after it is basically stable, then sprinkle 5~10mm particle size gravel in stages, and Roll forming.
(2) After milling and removing the soft layer with excessive oil content, redo the surface layer.
The following precautions should be taken into account when dealing with oil spills:
(1) The treatment time should be selected in the high temperature season when full oil flooding has occurred in the oil flooding section.
(2) The sprinkling material should be sprinkled in the direction of the driving, first thick and then thin; so as to spread less, spread thinly, spread evenly, without accumulation and without blanks.
(3) The use of fine materials containing powder is prohibited.
(4) Use road rollers or guided vehicles to roll, so that the scattered stones can be evenly pressed on the road surface.
(5) If the road rolling is used, the scattered particles should be swept back in time, and after the oil flooding is stabilized, the excess floating stones should be cleaned and recovered.
If there is only a slight oily road section, you can sprinkle stone chips or coarse sand with a particle size of 3~5mm, and roll it with a road roller or a controlled vehicle.
For the road sections with heavy oil spills, 5-10mm particle size gravel can be sprinkled first and rolled with a road roller. After it is stabilized, sprinkle stone chips or coarse sand with a particle size of 3~5mm, and roll it with a road roller or a controlled crane.
(1) First sprinkle a layer of 10~15mm particle size (or larger) gravel, use a road roller to forcibly press it into the road surface, after it is basically stable, then sprinkle 5~10mm particle size gravel in stages, and Roll forming.
(2) After milling and removing the soft layer with excessive oil content, redo the surface layer.
The following precautions should be taken into account when dealing with oil spills:
(1) The treatment time should be selected in the high temperature season when full oil flooding has occurred in the oil flooding section.
(2) The sprinkling material should be sprinkled in the direction of the driving, first thick and then thin; so as to spread less, spread thinly, spread evenly, without accumulation and without blanks.
(3) The use of fine materials containing powder is prohibited.
(4) Use road rollers or guided vehicles to roll, so that the scattered stones can be evenly pressed on the road surface.
(5) If the road rolling is used, the scattered particles should be swept back in time, and after the oil flooding is stabilized, the excess floating stones should be cleaned and recovered.
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