Regardless of any operation control of the roller, it is necessary to ensure that the operating platform and seat are firmly fixed, especially the movable operating platform and seat. Below, Jinan roller rental personnel will elaborate on the impact of roller operation control on the compaction effect of the road surface.
The operation control of road rollers mainly includes: walking control, steering control, vibration control, water spray control, and some control techniques for rolling operations.
Walking control of road rollers
Ensure that the control handle is flexible and tactile, not tight or loose. When starting, it should be gentle and not too fast, otherwise the driving wheel will form a backward pushing force, causing the loose asphalt layer to push and affect the compaction effect.
During operation, it is necessary to ensure uniform driving speed. According to construction requirements, the initial pressure is generally controlled at 1.5m/h-2Km/h, the re pressure is controlled at 4m/h-5Km/h, and the final pressure is controlled at 2m/h-3Km/h. The instantaneous stop during the compaction process should not be too rapid, otherwise it will cause the same phenomenon as the rapid start, which will cause the loose asphalt layer to move.
Steering control of roller
When rolling and turning, the roller must be gentle and smooth, with a turning radius that is not too small and a speed that is not too fast. Otherwise, due to the inertia and centrifugal force during turning, the asphalt mixture will be squeezed and pushed, affecting the compaction effect of the road surface.
Vibration control of road rollers
During the operation process, we mainly need to control the opening and closing times of the roller vibration. The vibration of the roller can only be started during the re compaction (main compaction) stage, and it must be started and closed in advance after starting, and cannot be rolled in place.
With the advancement of technology, many road rollers have been equipped with automatic opening and closing vibration functions, which are completed through a "manual/automatic" conversion switch. When the speed reaches a certain value, it will automatically start and then close again when the speed is below a certain value.
Water spray control of roller steel wheels
Regularly check the water storage capacity of the front and rear water tanks and add them in a timely manner. The two rows of nozzles and filter elements on the front and rear steel wheels should be regularly inspected and cleaned to maintain cleanliness. The amount of water sprayed can be selected from six control gears on the control console, usually in the fourth gear position. Spraying too much or too little water is not conducive to compaction. If it is too large, it accelerates the cooling of the asphalt mixture and shortens the rolling time. If it is too small, the asphalt mixture is prone to sticking to the wheel due to high temperature.
Compaction techniques of road rollers
We roll according to the construction technician's construction plan and compaction process, such as compaction speed, compaction temperature, and number of compaction passes. Secondly, we must ensure synchronous rolling of each roller and ensure consistency in rolling. And adhere to the rolling principle of "closely following the stable pressure, from the outside to the inside, from the low to the high, and from slow to fast". The adjacent rolling strips of the roller should overlap by 1/3-1/2 wheel width.
There are many compaction techniques for road rollers, and it is necessary to constantly explore and strive for excellence in compaction construction in order to achieve better compaction results. For more related content, come to our website http://www.ycgjglcl.com Consult and learn more!