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Road Roller The Role

AKW GROUP | Updated: Aug 02, 2017

When the vibratory roller is working by the repeated vibration of the vibrating steel wheel to increase the density of the road material, Road Roller the parameters of the vibratory roller are one of the main factors that are closely related to the asphalt pavement compactness. In order to improve the quality of compaction, it is necessary to consider and attach importance to the influencing factors of asphalt pavement compaction. We have already known that the amplitude, vibration frequency and rolling speed are the three main controlling factors when the vibratory roller is compacted. Road Roller The amplitude has the greatest influence on the compaction quality, followed by the rolling speed and the vibration frequency.

The amplitude represents the vibration intensity of the vibration wheel of the vibratory roller. In general, the increase in amplitude causes the vibrator to increase the strength and depth of action of the compacted material. But the amplitude is too large to cause the rolling of the pavement material is crushed, Road Roller compaction of the soil-based materials can not carry too high, Road Roller too strong compaction of energy, Road Roller resulting in cracking and other phenomena, but will have been compacted loose material, Reduce the degree of compaction, and the amplitude is too large will inevitably lead to roller frame vibration is too large, easy to cause the driver's fatigue and parts damage; when the amplitude is too small, the compaction depth becomes smaller, Road Roller the role of road roller is not enough, Compaction effect. Therefore, in the road construction, in order to improve the compaction efficiency, Road Roller select an appropriate amplitude is necessary.

Vibratory roller in the case of high-speed operation, than the low-level operations on the role of the road stronger, compaction better. In the case of high-speed operation, the depth of the operation and the energy acting on the road are much larger than those of the low-speed operation. Therefore, in Fig. 3, the high-speed operation will exhibit a significant pressure in the initial stage of compaction But with the increase in the number of compaction times will increase the degree of compaction will gradually increase, this difference will be smaller and smaller, Road Roller until the requirements.

Whether it is uphill or downhill, Road Roller the bottom of the asphalt mixture must be clean and dry, and must be sprayed asphalt binder layer to avoid mixing in the rolling.

Whether it is uphill or downhill, Road Roller the roller drive wheel should be in the back. This has the following advantages: uphill, the rear of the drive wheel can withstand the ramp and the machine itself to provide the driving force, while the front wheel on the road for the initial compaction to bear the drive wheel produced by the greater shear ; Downhill, the impact of gravity generated by the roller is driven by the wheel brake to offset, Road Roller only after the front wheel after rolling the support of the drive wheel to produce the ability to produce shear force.

Uphill rolling before the mixture should be cooled to the required low temperature, and then static preload, until the mixture temperature dropped to the lower limit (120 ℃), the use of vibration compaction

In the case of steep slope when the slope is very low, Road Roller you should first use the light roller preload, and then use a heavy roller or vibratory roller compacting.