There are many types of heavy machinery and construction equipment that are used specifically for special tasks.The self-propelled Soil Reclaimer is one of such special heavy machinery and construction equipment.

It is mainly used in dredging works in harbors, river areas, marshes, etc., and in highway construction sites to "improve" the "quality" of "soil," as the name suggests.

Soil Reclaimers are heavy machines that are used to change the soil and sand excavated for construction into reusable soil by mixing "cement-based" or "lime based" additives, thus making the environment more environmentally friendly and resources more efficient.
For example, sediment excavated from underwater during dredging work cannot be reused directly for landfill because it contains a lot of water. Such sediment must be disposed of as waste.
Also, when constructing new embankments for road construction, suitable soil must be mined from somewhere and brought in. If the earth and sand excavated during construction can be reused to make embankments, there will be no need for disposal sites and no need to mine earth and sand. Also, trucking operations can be minimized.

Of course, there are various regulations and rules by the government, so it is not simply a matter of using recycled soil as I have written about. However, in today's world where people are becoming more and more aware of environmental issues, I believe that Soil Reclaimer will continue to play a major role in the future.

As a matter of fact, I have met customers who use self-propelled Soil Reclaimer not as environmental machines but in a slightly different way.

For example, in the ceramic industry. The Soil Reclaimer is a machine that mixes additives into the raw soil. They were taking advantage of this feature to mix soil for pottery.

The self-propelled soil conditioner is not only used as an environmental machine and recycling machine, but may be used in a wider range of applications.

The self-propelled Soil Reclaimer is a niche type of heavy machinery because it is used in a limited number of places, but the structure itself is not that complicated. However, the structure itself is not that complicated. Nevertheless, the know-how of the craftsmen at the site greatly affects the quality of the recycled soil. In other words, the soil conditioner is a heavy machine that requires not only simple learning of how to operate but also skilled techniques. In order to get the best out of the performance set by the manufacturer, various rules of thumb are required, from the pre-mixing machine setting to the quality control of the improved soil that is actually produced. In the case of industrial waste producers such as sludge producers, some of them are stationary in combination with solidifier silos.

"This is a simple way of saying that the raw soil is mixed with a solidifier to improve it into recycled soil, but the quality and moisture content of the raw soil varies from site to site.
However, the soil quality and moisture content of the raw material vary from site to site, as do the conditions under which the soil is to be recycled.
It is important to determine the condition of the soil, and then decide which of the several types of solidifying materials to use. It is also necessary to decide how much of the material to add.

The process of "calibration," in which the sensor of the soil conditioner is made to remember the amount of solidifier to be added, is surprisingly difficult.
It is a process of setting the amount of additive to be added in relation to the amount of soil flowing through the conveyor, and the calibration process must be repeated many times to make fine adjustments in order to accurately produce the desired amount of recycled soil.

In addition, since each municipality has its own regulations on how to use recycled soil, it has to be in compliance with them.
In some cases, records of the amount of solidifier added, etc. must be submitted to the local government, so the soil conditioner is also equipped with a printer for recording.


The ability to store and print out the history of solidifier blending is now a must.

Compared to the relatively simple construction of the mixing machine itself, the soil conditioner requires more finesse in sensors, operation and adjustment.

Finally, let's take a look at the different types of Mobile Soil Reclaimer and what features they have. If we look at the self-propelled soil conditioners that we often deal with, the manufacturer's track record is clear.
he orange Hitachi SR-G2000/SR2000G and the yellow Komatsu BZ210-1 Liter G-MODE are two of the most popular models.

Made by Hitachi Construction Machinery: Representative machines SR-P1200, SR-G2000, SR2000G

Komatsu Construction Machinery: Representative machines BZ120, BZ200, BZ210~ G-MODE (RETRRA Retra construction method)

These are the two manufacturers.

There is a clear difference between Hitachi and Komatsu products in the way they agitate the soil, so it seems that there is a clear difference in suitability and unsuitability for different sites and soil types.

When introducing these products, be sure to understand the structural characteristics of both Hitachi and Komatsu products depending on the application and the nature of the raw soil, and decide which one is more suitable.

Mixers of Hitachi Construction Machinery Products

Two shafts rotate in different directions, and paddles attached to the shafts stir the raw soil and solidifier.
When sand and gravel are mixed in, the paddles are worn out, so measures such as installing wear-resistant paddles are necessary. It is necessary to take measures such as installing wear-resistant paddles.

・Inside the mixing chamber of the SR-G2000 with two mixer shafts, a paddle mixer and a liner to receive the mixer.

・Extendable solidifier hopper.
The hopper, which holds the solidifier, is telescopic and can be folded for transport.
×When the hopper is folded, the solidifying agent adhering to it may harden and tear when it is extended.

・The hopper is made of bellows so it can expand and contract freely.

The conveyor belt for feeding is made of rubber.
The belt conveyor is made of rubber and is easy to replace when worn out or deteriorated.
It is easy to replace when worn out or deteriorated.

・Belt conveyors for both loading and discharging. There are acclimation rollers at the back of the swinging gate.

Komatsu construction equipment mixing machine.

This type of mixer has a rotating cutter and hammer to cut the soil and mix it in.
(Some models are equipped with an after cutter that cuts and mixes the soil again just before discharge.)
(Some models have an after cutter that cuts and mixes the soil again just before discharge. (Machines equipped with G-MODE have a large processing volume.)
If you are overconfident in the robust mixing chamber and neglect to remove pebbles, it is easy to damage the mixing chamber.

・Inside the mixing chamber, soil cutters and rotary hammers are used to break up the raw soil and beat in the solidifying agent.

・After-cutter on the end of the discharge conveyor.

・Removable solidifier hopper.
×The solidifier hopper is too tall when installed, so it cannot be turned around. The hopper is made of steel, so it is difficult to break and relatively easy to repair.

・Carried separately by a 4-ton truck.

Belt conveyor for feeding is made of steel.
z High resistance to impact and wear.
(Repair costs are high when links stick or bushes wear out.

・A conveyor that seems to have been appropriated from a feed hopper and undercarriage.

Based on these features, I feel that the theory is to choose a Hitachi machine for handling clay soil or soil with a lot of water content, and a Komatsu machine for handling materials that are easily mixed with soil lumps...

In fact, we have heard that "Komatsu BZ210-1 RETTERA G-MODE is challenging to improve the dredging site of material soil with high moisture content! or "We have succeeded in improving demolition waste materials directly by installing a roll crusher primary crushing  one-off manufacturing screen on Hitachi SR-G2000! These are just a few of the comments we have heard.

Since the release of these self-propelled soil conditioners, the manufacturers as well as the rental companies that have professionally installed them (despite the fact that they are niche machines) seem to have accumulated a lot of feedback on field cases.

"It may seem difficult, but I have to consider introducing it! You may want to first consult with these highly specialized rental companies about the specific work you want to do, and try renting a machine with an operator.

Soil Reclaimer are not widely available, but Chukyo Juki Co., Ltd. offers used self-propelled soil conditioners.

If you are looking for a self-propelled soil Reclaimer, please contact us.

Click here to see the inventory of recycling equipment.↓