The main construction process of slurry sealing layer
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The main construction process of slurry sealing layer
Release Time:2024-01-04
1. Before the construction of slurry sealing layer, various tests of raw materials must be carried out, and they can only be used after passing the inspection. Various tests of the mixture must be carried out before construction. Only when it is confirmed that the material has not changed can it be used. During construction, according to changes in the residual content of emulsified asphalt and the moisture content of the mineral material, the mix ratio must be adjusted in time to make it meet the specified requirements to ensure the workability of the slurry mixture and proceed with construction.
2. On-site mixing: During construction and production, a sealing truck should be used for on-site mixing. Through the metering equipment of the sealing truck and on-site operation by a robot, it is ensured that emulsified asphalt, water, mineral materials, fillers, etc. can be mixed in a certain proportion. , mix through the mixing box. Since the slurry mixture has the characteristics of rapid demulsification, the operator must control the construction consistency to ensure uniform mixing of the mixture and workability of construction.
The main construction process of slurry sealing layer_1The main construction process of slurry sealing layer_2
3. On-site paving: Determine the number of paving widths according to the road width and paving width, and start paving according to the driving direction. During paving, the manipulator starts operating as needed to make the mixture flow into the paving trough. When there is 1/3 of the mixture in the paving trough, it sends a starting signal to the driver. The sealing vehicle should drive at a constant speed, about 20 meters per minute, to ensure uniform paving thickness. After each vehicle is finished paving, the paving trough must be cleaned in time and the rubber scraper behind the paving trough must be sprayed and scraped. Keep the paving trough clean.
4. Inspection of the mix ratio during construction: Under the calibrated dosage unit, after the slurry mixture is spread, what is the oil-stone ratio? On the one hand, it can be observed based on experience; on the other hand, it is to actually check the dosage and spreading of the hopper and emulsion tank. Back-calculate the oil-stone ratio and displacement from the time it takes to lay, and check the former. If there is an error, conduct further investigation.
5. Carry out early maintenance and open to traffic in a timely manner. After the slurry seal is laid and before it solidifies, all vehicles and pedestrians should be prohibited from passing. A dedicated person should be responsible for doing early maintenance to avoid damage to the road surface. If the traffic is not closed, When local diseases are caused due to strict or incomplete cleaning of the original road surface, they should be repaired immediately with slurry to prevent the disease from expanding. When the adhesion of the mixture reaches, the initial maintenance is completed, and when vehicles drive on it without obvious traces, it can be opened to traffic.