Komatsu Recommendation
Road Sub-grade Recycle Method
"Sub-grade recycling" is a road rehabilitation method to recycle old pavement materials (like asphalt and sub-grade) and to use them again as the subgrade materials for the new pavement. Komatsu's "sub-grade recycling" fleet proves its exceptional operating efficiency, reduced working time and labor, especially in the demolition of old roads (except concrete) requiring rehabilitation. Lime Spreader spreads lime or other stabilizing agent over the old road surface; then, the stabilizer cuts and crumbles the old pavement into splinters and mixed them with the stabilizing agent.
The splintered material is graded by a motor grader and reused as subbed material for the new road. This subbed material is further compacted by a vibratory roller. Finally, the paving machine completes the paving process.
Asphalt pavement Profiling Method
The "asphalt-pavement profiling" is the road rehabilitation method to remove the damaged or uneven portion of asphalt pavements using a road cutter and to pave the new asphalt over them to keep the road flat. Komatsu's "asphalt-pavement profiling" fleet demonstrates exceptional operating efficiency as well in repairing the uneven surfaces and ruts of asphalt pavements, assuring reduced working time and labor.
The Komatsu GC380F Road Cutter first scrapes the uneven portions of the road surface, then automatically feeds the waste to a dump truck. Dust and particles that could not be collected by the road cutter are neatly cleaned by the road sweeper. An asphalt finisher then completes the asphalt paving process. Finally, the vibratory roller compacts the asphalt surfaces.
1. Wheel stabilizer
The GS360 Wheel Stabilizer is recommended for harder ground or road subbase improvement work that has been made either by hydraulic excavators or by brute force. The max. digging depth is 400 mm (15.7'').
2. Lime spreader
In conventional operations, lime or other soil stabilizing agents or soil improvement are spread over the ground manually or through the use of hydraulic excavators.
3. Crawler stabilizer
This is Komatsu's efficient alternative to conventional road subbase rehabilitation/improvement methods, especially where the ground is soft, owing to the use of hydraulic exacavators or intensive, physical labor. A single passage of the crawler stabilizer effectively crumbles old pavements; a stabilizing agent is mixed, and the crushed materials are then used as the subbase material for the new pavement. Two digging depths are available. The CS360SD can dig down to 1.2 meters (3'11''), the CS360 down to 0.7 meters (2'4''), and the CS210 down to 0.6 meters (2').
4. Road cutters
Usually, uneven road surfaces and ruts are removed by road cutters. In this case, the dirt is removed manually. Komatsu's GC380F, which comes with a feeder, effectively scrapes jutting road surfaces and automatically loads the waste into a dump truck. Another advantage is that a single operator of less experience can control this machine with the equal skill of two veteran operators.
5. Motor Graders
Komatsu provides an excellent range of motor graders in various sizes depending on specific grading requirements.
6. Vibratory rollers
Komatsu also offers a wide range of vibratory rollers in various configurations depending on specific compaction requirements .
Wheel Stabilizer GS360-2
The GS360 Wheel Stabilizer is designed for rehabilitation of old, damaged roads and for soil Improvement tasks in farmland or around housing developments. When it comes to reducing working time and costs, the GS360 is the answer for any type of road / soil subbed rehabilitation.
Exceptional productivity:
The powerful digging force easily breaks down asphalt pavements up to 150 mm (5.9") thick, and digs down to 400 mm (15.7") to perform simultaneous crumbling and mixing operations. The optional rotor enables digging / mixing operation even down to a depth of 700 mm (2'4").
Uniform crumbling and mixing:
Rotor tilting operation is possible due to the left-right individual control of the rotor lift. The up-cut method and effect of the secondary crusher make granule / subbase soil mixing work very efficient. Rotor offset of 285 mm (11.2") to the left and right beyond the outer edge of the tires
Stable rotor operation:
The tandem drive wheels and central placement of the rotor assure that, even on rough and tough roads, there is very little vertical movement of the rotor, and traction remains powerful, securing constant cutting depth.
In-the-field rotor disc replacement:
The discs can be easily assembled and disassembled with a few bolts. For extra convenience, the bits are tapered and are attached by being hammered into place, thus facilitating replacement.
Specifications
ATTACHMENTS AND OPTIONAL EQUIPMENT
• Steel cab • Tool kit
• Canopy • Wide tire 17.5-25-12PR (G-2)
• Working equipment
Road planer
Digging depth 500m (19.7") rotor for FRB
Digging depth 600 mm ~ 700 mm (23.6" ~ 27.6") rotor for soil stabilizing
Soft rock crusher
(Drum type rotor and conical bits are used )
Crawler Stabilizer
CS210-1, CS360-2
Features
Komatsu's sophisticated crawler stabilizer crumbles old pavements and mixes the resulting splinters with lime or other stabilizing agent, simultaneously. When it comes to road rehabilitation or soil improvement work, it is truly a paragon of efficiency. High traveling stability is assured by superb machine weight balance and crawlers equipped with swamp shoes. This enables the machine to operate even on soft terrain, ensuring constant digging / mixing depth.
Great productivity:
The high-power Komatsu diesel engine provides a massive output of 355 HP (265 kW) for CS360 and 203 HP (154 kW) for CS210 and a large torque, making it easy to perform mixing operations at a high working speed.
High mixing performance:
Powerful up-cut method, ideal bit alignment and the optimal rotor speed are combined to provide exceptional mixing performance. Komatsu's original secondary crushing mechanism enables the machine to demonstrate high mixing performance even when working in clayey soil conditions.
Large digging depth:
The CS360 with the standard stabilizer can dig down to 700 mm (2'4").
The CS210 can dig down to 600 mm (23.6"). The CS360SD with the special deep stabilizer can dig down to
1200 mm (3'11")
Wide rotor offset:
The CS360 offset mechanism makes it possible to extend the rotor 170 mm (6.7") beyond the outer edge of the left track. The CS210 offset mechanism makes it possible to extend the rotor 140 mm (5.5") beyond the outer edge of the track. The CS360SD offset mechanism makes it possible to extend the rotor 140 mm (5.5")
beyond the outer edge of the track.
Road Cutter
GC380F-2
Features
Thanks to the Komatsu GC380F and GC50 Road Cutters, maintaining asphalt pavements with undulating or rutted surfaces is now easier, more precise, more productive, and cost efficient. The GC380F Road Cutter alone effectively cuts the road surface. The areas around manholes and other obstacles, where the GC380F cannot cut, is expertly handled by the compact GC50 Road Cutter which is equipped with articulation frames.
Superior working ability:
The Komatsu SA6D140 engine produces great power which provides exceptional cutting ability down to 150
mm (5.9''). It shortens work periods and reduces costs.
Long rotor sideshift:
The rotor provides a great cutting width of 2070 mm (6'10'') and can be side-shifted (450 mm or 1'6'' to the left and right) very close to curbstones . This eliminates the need for manual cutting.
Automatic cutting control (ACC):
Enables the adjustment of digging depth in increments of a millimeter, as well as assuring precise cutting to the determined depth.
All controls in the hands of a single operator:
The comprehensive control panel is installed on the left and right sides of GC380F, respectively. All machine operations, including steering, can be controlled by a single operator.
Low-noise operation:
Closed engine hood and suction-type radiator fan help reduce operating noise, making the machine ideal for
urban road maintenance work.
Specifications
Stone Crusher
CS210-1
• The splintered stones are laid in such a way that finer granules are gathered in the upper layer with larger gravel remaining in the lower layer; this produces the ideal sub-bed configuration.
• The substantial working depth of 315 mm (12.4") reduces the burden on machines at the next processes.
• High splintering performance: 90 - 95% by weight of splintered stones are less than 30 mm (1.2") in diameter.
Specifications
* With cab and 750 mm (30") triple grouser shoes.