1. Working principle
Rammer:
Rammers use high impact force and large tonnage compaction force to impact and compact the ground. Its working principle is to use the weight of the impact wheel itself and the impact force when moving forward to break and compact the road surface and roadbed.
The impact force of the rammer is large, which can penetrate deep into the soil layer to achieve deep compaction, so that the soil particles are tightly combined, and the density and stability of the foundation are improved.
Vibratory roller:
The vibratory roller uses its own gravity and the vibration of the vibrating wheel to produce a reciprocating vibration compaction effect on the paving material. The vibratory roller adopts an articulated frame, hydraulic travel, hydraulic vibration, and a fully hydraulic steering system. It has two vibration frequencies and two-level amplitudes, which can be adapted to the compaction of paving layers of different thicknesses and various materials.
The vibration of the vibratory roller can cause the paving material to loosen and rearrange to a certain extent, thereby improving its density and stability.
2. Compaction effect
Rammer:
Rammer has a significant deep compaction effect, which can effectively improve the bearing capacity and stability of the foundation.
Rammer is suitable for occasions where deep compaction is required, such as the construction of large infrastructure such as roads, railways, airport runways, dams, etc.
Vibratory roller:
Vibratory roller mainly acts on the surface of the paving material, and the compaction depth is relatively shallow, so it is more suitable for some occasions where the compaction depth is not high, such as urban roads, parking lots, etc.
The vibration of the vibratory roller can cause the paving material to loosen and rearrange to a certain extent, thereby improving its density and stability.
3. Scope of application
Rammer:
Rammer is widely used in the construction of large infrastructure such as roads, railways, airport runways, dams, etc.
Rammer is suitable for occasions where deep compaction is required, which can effectively improve the bearing capacity and stability of the foundation.
Vibratory roller:
Vibratory roller is suitable for some occasions where the compaction depth is not high, such as urban roads, parking lots, etc.
Vibratory rollers can also be used to compact non-cohesive soil, gravel, gravel mixtures, various asphalt concrete and other materials.
4. Operation and maintenance
Impact rammer:
The operation of the impact rammer is relatively complex, and the operator's skills and experience are required to be high.
The structure of the impact rammer is relatively simple, and the maintenance cost is low.
Vibratory roller:
The operation of the vibratory roller is relatively simple and easy to use.
The structure of the vibratory roller is relatively complex, and the maintenance cost is relatively high.
5. Construction efficiency
Impact rammer:
The effective compaction thickness of the impact rammer can reach 1m-1.5m, the driving speed is generally 10-15km/h, and the foundation area that can be compacted per hour is up to 20,000m².
Vibratory roller:
The compaction thickness of the vibratory roller is 0.2-0.3m, and the rolling speed is maintained at 4-6km/h. Multiple rolling is required to achieve the same compaction effect.
