Why do you need the compaction equiment
Soil compaction is an important part of the construction process. Usually in different construction projects, it is often necessary to excavate the ground, ditch and other operations, which leads to loose soil, air and water can easily enter, and there is no stable structure. There are cracks in the walls and potholes in the road. Soil compaction actually increases the density of the soil by reducing the void space between soil particles or the amount of air in the soil. So compacted soil has less space, higher unit weight, higher resistance and greater stability. Provide the necessary flat foundations, provide key support for construction foundations, sidewalks, roads or other building structures, and reduce the possibility of settlement of buildings, roads, parking lots, etc. after the completion of the project.
Different types compaction equipment
Compactors apply force to the ground to increase soil density. Some devices only apply static forces, pressures created by the machine’s own weight and configuration. This static force has the greatest effect on the surface material, and the depth of action on the foundation is limited. Other equipment applies vibration or shock to increase its compaction effect. These machines use a mechanism, usually driven by an engine, to increase the downward force beyond the static weight of the machine.
Rammer. The tamper is driven by a small engine or motor to generate a high impact pressure force. The engine of the machine drives the internal parts of the machine to move the crankshaft, drives the springs in the machine to shrink the upper and lower parts of the machine, and provides power to the piston through two sets of springs to bounce to the ground. generate impact. The operator moves the machine by hand to realize the compaction of the road surface, and the machine occupies a relatively small area, so the impact rammer can easily enter some narrow and obstacle working areas.
The tamper delivers high-amplitude shocks at a frequency of 500 to 750 strokes per minute, providing the shear force needed to compact cohesive soils.
Vibratory plate compactor
Vibrating plates produce low-amplitude, high-frequency vibrations optimal for compacting granular soils. They use a gasoline or diesel engine to drive one or more eccentric weights to generate vibrations in the frequency range of 2500 to 6000 vpm.
The most basic vibratory plate compactor only travels forward, and its forward motion is driven by the vibrating plate itself. Some models are equipped with a water tank, which can be used for asphalt pavement. The use of water can prevent the asphalt from sticking too much to the rammed plate.
There are also larger and heavier vibratory plate compactors. Overweight machines make it difficult to move, so these larger units are usually reversible walking, making it easy to move forward and backward. The heavier tamper plates and counterweights also increase their compaction force, which is better than regular machines.
Walk behind road roller
Walk-behind rollers are ideal for patching asphalt, compacting roads and other small projects. Walk-behind rollers typically use smooth rollers to quickly and efficiently compact and level the substrate of parking lots and concrete warehouse slabs. Smooth rollers use static pressure, vibration and shock to compact materials such as gravel, rock, sand and asphalt. The double-barreled walk-behind model can handle most jobs. Rollers come in a variety of sizes and weights. Long roads require heavy duty rollers – with single or double wheels, ranging in weight from 1 ton to several tons, for compacting gravel and asphalt bases. This heavy-duty is more convenient and efficient when projects require large, flat surfaces in granular soils.
How to choose the suitable compaction machine
Know your soil
The first step in choosing the right compaction equipment is to determine the soil type on the job site. Different soils use different types of machines. Compactable soils are generally granular or cohesive. Granular soils such as sand or gravel, because of the inconsistent particle size, are best done through vibratory compaction, which works by rearranging the particles that are “shaken” together to get closer to each other, increasing density and eliminating any voids. For cohesive soils, compaction is like pinching them together, so a heavy duty roller is a better choice.
Know your site
The next step in finding the right compactor is knowing your site. There is no one-size-fits-all when it comes to compaction equipment. If your work site has cables and other lines buried in the ground, then it is not recommended that you use a heavy machine such as a road roller. You also need to consider the size and topography of the job site. Rollers are more efficient and work better if the work space is more spacious. However, the work site is relatively narrow and there are obstacles. Impact rammers or flat plate compactors are more suitable. The light and compact body is convenient for movement in these sites.
Know your machine
Like all equipment, finding the right machine for a particular job helps ensure the most economical and efficient results. So you need to know enough about the equipment you already have, understand their intended use, performance, use environment, etc., so that they can bring you the most benefit.