Functional differences and core uses
1. Asphalt spreader: Mainly used for asphalt spraying in road paving or maintenance, with heating, heat preservation and quantitative spraying functions. Its core advantage lies in the precise control of asphalt dosage (error range ±2%, refer to the “Technical Specifications for Highway Asphalt Pavement Construction”), suitable for new roads, crack filling and other scenarios.
2. Powder truck: mainly used for transporting and spreading powdered materials (such as lime and cement), and evenly distributed through pneumatic conveying or mechanical throwing. It is often used in environmental protection projects such as soil improvement and dust control. The typical operating efficiency is 15-30 tons per hour (data source “Technical Standards for Sanitation Machinery and Equipment”).
Selection basis and scene adaptation
1. Operation demand matching
- If the project is mainly based on asphalt pavement construction (such as urban main road renovation), asphalt spreader is indispensable;
- If it involves dust control or foundation treatment (such as construction site dust suppression), powder truck is more efficient.
2. Economic comparison
- The purchase cost of asphalt spreaders is relatively high (about 800,000-1.5 million yuan/unit), but the single operation covers a large area (average daily 5,000-8,000 square meters);
- The price of powder trucks is relatively low (300,000-600,000 yuan/unit), but materials need to be frequently replenished, which is suitable for long-term dispersed operations.
3. Environmental adaptability
- Asphalt spreaders are sensitive to temperature (the asphalt needs to be kept at 150-170℃), and auxiliary heating equipment is required in cold areas;
- Powder trucks are greatly affected by wind power, and operations need to be suspended when the wind speed exceeds level 4 (according to the “Technical Guidelines for Air Pollution Prevention and Control”).
Operation and maintenance points
1. The asphalt spreader needs to clean the nozzle blockage regularly to avoid asphalt solidification; the heat transfer oil should be replaced every 500 hours (refer to the manufacturer’s maintenance manual).
2. The powder truck should pay attention to the sealing of the silo to prevent moisture; the transmission parts need to be lubricated weekly to ensure uniform spreading.
(Note: This article does not mention specific brands. The data are all from public technical standards. Users can further filter equipment based on actual parameters.)
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Post time: Jul-24-2025