新闻动态
NEWS
Some knowledge points of the road roller, Luoyang road roller manufacturers to tell you
Release time:
2023-01-31
Source:
Luoyang roller manufacturers believe that the vibration frequency of the roller is the number of times the roller vibrates per unit of time. The vibration frequency directly affects the compaction of the compaction foundation, and it is an important factor that affects the movement state of the compaction foundation material particles. Generally in a certain frequency range, the higher the vibration frequency, the better the road compaction effect.
Luoyang road roller manufacturers believe that when the elementary particles resonate, the friction between the materials will be reduced and the fluidity will be enhanced. At the same time, the corners of the particles will be broken by the high-frequency impact, so that the voids will be reduced. Under the action of the vibratory roller, the particles will be re-lined up, especially the small particles will be quickly mixed into the large particles, extruding the air and water in the gap.
Luoyang road roller manufacturers believe that in reality, the gradation, structure and physical properties of the soil are different, and it is difficult to determine the specific parameter values of the vibration frequency. Even if it is determined, it is only for specific soils, limiting the application range of vibratory rollers. Even if the soil densification of the same construction area increases, the mechanical parameters of the soil stiffness tends to increase, damping tends to decrease, and the self-oscillation frequency tends to increase.
Luoyang road roller manufacturers believe that in order to fully utilize the vibration energy of vibratory rollers and improve work efficiency, the vibration frequency should be slightly higher than the intrinsic frequency of the soil. Therefore, according to different applications and requirements, you need to choose different tonnages, different grinding forms of various models and types of vibratory rollers.
Luoyang road roller manufacturers believe that the roadbed is the supporting structure of the road surface, the layer of thick material, from coarse stone to clay containing fine particles, varying in size. The settlement after compaction is large, and the requirements for pavement smoothness are relatively low. Practice has proved that the use of heavy vibratory rollers to compact fill stone is an effective method, and the appropriate vibration frequency is 25~30Hz.
The compaction requirements of sub-base and granular base are higher than those of road base, and the materials are mainly sand, gravel and soil fines. Therefore, often use a slightly larger tonnage of single-wheel vibratory roller or more than 10 tons of double-wheel vibratory roller for compaction. Tests show that when the vibration frequency is in the range of 2540Hz, good compaction results can be obtained.
Luoyang road roller manufacturers believe that when the vibrating rollers vibrate at a high frequency, the amplitude decreases, so it is difficult to obtain a high excitation force. Therefore, the compaction depth is shallow, and it is necessary to increase the number of rolling passes to achieve the required compactness. When using low-frequency vibration, the amplitude increases, the compaction depth deepens, but the quality of surface compaction smoothness deteriorates, the compaction speed decreases, affecting the compaction efficiency.
Luoyang road roller manufacturers believe that when the vibratory roller for asphalt aggregate recompression, vibration frequency between 60 ~ 80hz, compaction effect is better. Because enhance the vibration frequency will increase the manufacturing cost and construction cost, at present, the vibration frequency of large two-wheeled vibratory roller is generally only 40 ~ 55Hz, high-frequency vibratory roller vibration frequency up to 60Hz or more.
More information
unified national sales telephone:
Address: No.2, Luoxin Industrial Agglomeration Area, Luoyang City, Henan Province
WeChat Public Number
SAF Coolest v1.3.1.1 设置面板 FMBSS-ARAB-QSSQE-ZVF
无数据提示
Sorry, there is currently no content in the current column!
You can view other columns or return to home