How to Configure Road Construction Machinery by Work Process
Key takeaways
For road projects, motor graders, rollers, asphalt pavers, and cold planers should not be procured based on a 'bigger is better' principle. This article explains the process boundaries for subgrade shaping, material compaction, asphalt paving, and old road milling, using manufacturer specifications and a 1-kilometer dual-lane asphalt quantity example to verify paving capacity.
Subgrade Shaping: Focus on Motor Grader Blade and Control Systems
After subgrade material is spread, the motor grader is responsible for cutting high spots, filling low spots, establishing cross slopes, and shaping shoulders. Compaction is still performed by compaction equipment. Using official Cat 140 data as a reference, its typical operating weight is 20,236 kg, net power is 186 kW, blade width is 3.7 meters, and maximum cutting depth is 735 mm. The 735 mm is the machine's geometric capability, not the structural layer thickness for a single pass; operations must be layered according to design elevation, loose lift thickness, and survey control. Quotations should also specify 2D or 3D grading, front dozer blade, ripper, and emissions version, not just '140-class motor grader.' Cat 140 Specifications
Compaction Equipment Must Match Material and Test Section Requirements
Granular base layers and cohesive soils cannot use the same drum configuration. The official Cat CS11 GC smooth drum vibratory compactor is suitable for granular soils and can be used for cohesive soils after installing a padfoot shell kit. With a cab, its operating weight is approximately 11,238 kg, compaction width is 2,134 mm, high and low amplitudes are 2 mm and 1 mm respectively, and maximum centrifugal force is 250 kN. High amplitude is not suitable for all materials: moisture content, layer thickness, speed, and number of passes collectively determine the compaction result. Contractors should first provide the target density, material gradation, and moisture content for a test section before determining the smooth drum, padfoot drum, and vibration settings. Cat CS11 GC Specifications
Paving Capacity Must Be Back-Calculated from Road Width and Tonnage
The Vögele SUPER 1800-5 X has a basic paving width of 2.55 meters, expanding to a maximum of 10 meters with screed extensions. The manufacturer claims a maximum paving capacity of 700 tons/hour. Assuming a 1-kilometer, 7-meter-wide asphalt layer with a compacted thickness of 50 mm, and a mix density of 2.35 tons/cubic meter, the required quantity is 7 × 1,000 × 0.05 × 2.35 = 822.5 tons. Based on a theoretical capacity of 700 tons/hour, this would take approximately 1.18 hours. Actual output is also limited by asphalt plant supply, transport truck intervals, material transfer pauses, and the initial compaction window. Therefore, inquiries must specify the clear road width, layer thickness, daily planned tonnage, and material transport distance to determine the appropriate screed, hopper, and accompanying rollers. Vögele Road Pavers
Old Road Rehabilitation: First Assess Milling Width and Material Removal Capacity
Cold planers are used to remove distressed layers from existing roads and should not be included in the basic equipment list for new road construction. The Wirtgen W 200 F has a standard milling width of 2,000 mm, with an optional 2,200 mm, a maximum depth of 330 mm, an operating weight of approximately 28,200 kg, and a theoretical discharge conveyor capacity of 375 cubic meters/hour. For a 7-meter-wide road, planning with a 2-meter cutting drum would require at least four transverse passes. Overlaps, manhole avoidance, and the rhythm of sweepers and material transfer vehicles must also be coordinated. When approaching a cutting depth of 330 mm, the underground structure and layered treatment plan should first be confirmed; the maximum cutting depth should not be directly used as a continuous production parameter. Wirtgen W 200 F Specifications
How Easysail Supports Such Procurement
The most common issue in road machinery procurement is having a complete list of equipment names, but the blades, drums, screeds, and milling drums do not match project parameters. Easysail can verify the model, year, serial number, emissions version, working width, equipment condition, and transport dimensions before a transaction. We coordinate inspection videos, configuration lists, disassembly and packaging, shipping documents, and delivery milestones. Please provide road structure, materials, layer thickness, target output, equipment condition (new/used), destination country or port, and delivery date, and we will verify the equipment combination, complete technical documentation, applicable conditions, and quotation accordingly.