Construction of Modified Asphalt SMA Pavement

in Announcements Tue Oct 25, 2016 3:15 am
by quangongzi • 57 Posts

The mixers have sufficient capacity to add a large amount of mineral powder, and have independent access to the fibers in the mixing vessel. Strictly in accordance with the production mix than mixing, and strict control of the construction temperature, mixing floor control room by-disk printing of asphalt and the amount of various mineral aggregate and mixing temperature.
In the mixing process, in addition to automatic monitoring of the thermometer, the observation mixture situation is also very important: take white smoke is normal, such as thick smoke to smoke, we must check whether the temperature exceeds the prescribed. For the overheated mixture or have been carbonized, blistering or water content of the mixture should be discarded.Small Road Roller - Shanghai Doan Machinery Technology Co.,Ltd

Appropriate increase in dry mixing and wet mixing time, usually 50 ~ 60s, to ensure uniform mixing.
Mixture transport
Carriage Before loading the car, the bottom of the car to be coated with a layer of release agent to prevent the mixture stuck on the floor. The release agent may be soapy water, lime water or a mixture of oil and water. Prohibit the use of pure fuel oil as a release agent. Load multiple unloading, in order to reduce the larger aggregate rolled off to the edge of the discharge caused by segregation. Test section with unloading a bucket to move the car position. Generally set by mixing station signs set to move three times, that is, according to the vehicle before, after, in the order of discharge. According to the mixing machine production, paving speed, distance, wait for unloading time and road conditions, 12 liberation dump truck will be able to meet the requirements, to ensure that there are always 4 to 5 before the pavers. Mixing materials in the transport process must be covered with shed cloth to prevent the mixture hard shell.
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