Compactor machines (трамбовка/виброплита/вибротрамбовка) are used to reduce the size of material or biomass through a process of compaction. For example, a compactor is used to reduce the volume of waste material it produces while a plate compactor is used to compress the size of different types of soil and gravel for construction purposes. Have a peek at this web-site:https://aidogroup.ru
Methods of Compaction
Compaction is the rapid reduction of volume by means of mechanical methods. The process of compaction involves pressing soil particles very close together. During the compaction process, the air present in the void spaces in soil mass is expelled in order to increase the mass density. Compaction equipment, such as rollers, is used in the compaction process.
Different Types of Rollers
The use of certain compacting machines depends on the soil type and the moisture condition of the soil that can be divided into two groups:
- Compaction equipment for use on light soils
- Compaction equipment for use on heavy soils
Light soil compaction equipment is commonly used in small areas where less compaction effort is needed and includes the following:
• Rammers are light and can be machine or hand operated to compact small areas or where there is a difficulty of access. They are suitable for compacting cohesive soils as well as other types of soil. Machine-operated rammers vary in weight which is allowed to fall free on to the soil from a height of between one to two meters in order to compact rock fragments.
• Vibrating Plate Compactors with plate areas between 0.16 square meters to 1.6 square meters are used for the compaction of coarse soils in small areas and weigh between 100kg to 2 tonnes.
• Vibro Tampers are used in small and confined spaces and are suitable for compaction of all types of soil. Vibrations that are set up in a base plate by a spring that is activated by an engine-driven reciprocating mechanism. They weigh between 50kg to 100kg and are usually manually operated.
Heavy Soil compaction equipment is used for larger areas and is selected according to the type and moisture content of the soil.
• Smooth Wheeled Rollers come in two types: static and vibrating smooth wheeled rollers(Каток (машина)).
Static smooth wheeled rollers are most suitable where crushing of gravel, asphalt, well-graded sand, and crushed rock are required. They are generally used on soils that do not require a great deal of pressure for compaction such as finishing upper surfaces of soil.
Vibrating Smooth Wheeled Rollers have drums that vibrate by employing reciprocating or rotating mass. They are suitable for several applications including:
- Where compaction is required to be done at greater depths;
- Higher compaction level can be achieved by maximum work;
- Output required is many times more than what can be achieved with conventional rollers. Certain work specifications for excavation projects recommend the use of vibrating smooth rollers due for their significant advantages over static smooth wheeled rollers.
• Sheepsfoot Rollers are for the compaction of fine-grained soils such as silt or heavy clay soil found in embankments, dams, and subgrade layers in railroad construction projects, roadworks, and pavements.
• Pneumatic Tyred or Rubber Tyred Rollers are used for compacting coarse-grained soil in applications such as subgrade layers in earthwork and bituminous pavements.
• Grid Rollers are used for compaction of well-graded coarse soils and weathered rocks and their main application is for sub-base and sub-grade soils in road construction.
• Pad Foot or Tamping Rollers with larger lugs of areas have a higher production capacity than sheepsfoot rollers. They work at higher speeds and are capable of crushing large lumps of material and are most suitable for the compaction of cohesive soils.