What is hot asphalt?
hot asphalt is a material produced at the factory at a temperature above 150 degrees Celsius and due to its high temperature, it should be run by special machines, hot asphalt is suitable for flooring, freeways, streets and alleys.
In what heat is the hot asphalt produced and manufactured?
The temperature that should be given to the asphalt to be done is about 150 degrees Celsius in the factory, but this heat is not constant and variables such as the material of the stone, the thickness of the layers and the like should be considered. P>
The appropriate temperature for asphalt is at least 2 degrees Celsius and should not be less than that, so asphalting roads at low temperatures and in cold seasons is not recommended and the best time to do so is that the grade is not recommended. The heat is above 2 degrees.
What is cold asphalt and what are the uses?
A type of asphalt called cold asphalt or Cold Mix is made from a combination of bitumen emulsion or soluble bitumen with rocks and materials of this genre. These materials are combined at ambient temperature and can be transported and distributed on long routes because of the moisture in it. After smoothing the route by cold asphalt, the moisture in it is lost by the heat of the ambient and is suitable for use.
This type of asphalt is widely used in pavement layers due to its manufacturing and materials used and is often used for procedure and liner. This type of asphalt is not suitable for roads and roads with heavy traffic and is mostly used for light traffic. Other uses of cold asphalt include the creation of a layer on the floor of the sports, staining and pavement of the roads, as well as filling the pits and cracks.
Asphalt Mix Quality Control
from the asphalt, the liner and procedure produced in the asphalt factory, at least 2 samples daily, and if the production is high, one sample of asphalt truck is tested and tested to the aggregation results. Determine the percentage of bitumen, strength, empty space, asphalt specific gravity, and bitumen -filled space.
The results of each of these values must be within the specification range, otherwise the necessary measures should be taken to fix the trouble. If the results of the experiments are out of the profile range 4 consecutive times, the asphalt operation should be stopped and reinforced after the troubleshooting.
Asphalt carrying
asphalt transportation from the factory to the airline is done by the truck. The interior surfaces of the truck that contact the asphalt should be completely clean and free of any contamination. To prevent the asphalt from sticking to the walls of the truck room, the truck room should be washed with lime water before pouring the asphalt. Washing with any type of oil forbidden.
Whenever the asphalt temperature drops more than 10 ° C during the asphalt shipment, the truck should be covered with tarpaulin so that the asphalt surface does not cool and does not lose its uniformity.
maximum asphalt shipping time 45 The minute and the maximum shipment distance with the truck is 70 km. Increasing time and high temperature of asphalt during the transport cause some bitumen to accumulate in the truck floor and the asphalt above the truck, low bitumen and asphalt of the truck floor.