Asphalt Distributor

Product Specifications

Technical details and manufacturing context for Asphalt Distributor

Definition

An asphalt distributor is a heavy-duty construction equipment used in road building and maintenance operations to apply controlled amounts of liquid asphalt (bitumen) onto prepared surfaces. It consists of a heated tank, pumping system, spray bar with nozzles, and precise control mechanisms to ensure uniform application rates for proper bonding between pavement layers. The machine is typically mounted on a truck chassis or trailer, allowing it to be transported to various job sites. Its primary function is to provide a uniform and consistent layer of asphalt binder, which is essential for the adhesion between existing pavement and new asphalt layers. The equipment is designed to handle a range of tank capacities, typically from 4,000 to 12,000 liters, and can achieve spray widths from 2.5 to 6 meters. The application rate can be adjusted from 0.2 to 3 liters per square meter, depending on the specific road construction requirements. The heating system maintains the asphalt at temperatures up to 400°C, with a maximum operating temperature for asphalt binder of 180–200°C. The pumping system operates at pressures of 1.0–1.6 bar and delivers flow rates from 300 to 1,200 liters per minute. The spray bar height can be adjusted from 0.2 to 0.5 meters above the road surface to accommodate different paving scenarios. The control system ensures accuracy within ±1% for application rate, and operates on a 24 V DC power supply with a tolerance of ±10%. Overall dimensions vary with chassis, typically ranging from 8,000–12,000 mm in length, 2,500–3,000 mm in width, and 3,000–4,000 mm in height. Total weight, including asphalt load, ranges from 15,000 to 30,000 kg. Materials used in construction include carbon steel, stainless steel, and heat-resistant polymers. For any specific model, it is essential to verify the exact specifications and compliance with relevant standards with the legal manufacturer or supplier.

Working Principle

The asphalt distributor operates by heating and maintaining liquid asphalt at optimal viscosity in an insulated tank. A pumping system draws the heated asphalt from the tank and delivers it to a spray bar assembly mounted at the rear of the vehicle. The spray bar contains multiple adjustable nozzles that distribute the asphalt in a controlled pattern as the vehicle moves forward. Electronic controls regulate application rate based on vehicle speed, ensuring consistent coverage per unit area. The system allows for precise adjustment of spray width and application rate to meet project requirements.

Common Materials

Carbon Steel, Stainless Steel, Heat-resistant Polymers

Technical Parameters

Parameter	Typical range	Notes & selection driver
Tank CapacityRequired	4000–12000 liters	Maximum volume of liquid asphalt the tank can hold
Spray WidthRequired	2.5–6 meters	Maximum width of asphalt application from the spray bar
Application RateRequired	0.2–3 liters/m²	Controlled amount of asphalt applied per unit area
Heating CapacityRequired	150–400 °C	Maximum temperature the heating system can maintain
Operating PressureRequired	1.0–1.6 bar	Pressure at which asphalt is pumped through the system
Max Operating Temperature	180–200 °C	For asphalt binder
Pump Flow Rate	300–1200 L/min	Determines spray rate
Spray Bar Height Adjustment	0.2–0.5 m	Above road surface
Control System Accuracy	±1 %	For application rate
Power Supply	24 ±10% V DC	For control system
Overall Dimensions (L×W×H)	8000–12000×2500–3000×3000–4000 mm	Depends on chassis
Total Weight	15000–30000 kg	Including asphalt load

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Asphalt Tank
Stores and maintains liquid asphalt at optimal temperature

Material: Insulated carbon steel with heating elements
Spray Bar Assembly
Distributes asphalt evenly across the road surface through multiple nozzles

Material: Stainless steel with adjustable nozzles
Pumping System
Transfers asphalt from tank to spray bar at controlled pressure

Material: Heavy-duty gear pump with heat-resistant seals
Heating System
Maintains asphalt at proper viscosity for spraying

Material: Thermal oil or direct-fired heating elements
Control Console
Electronic interface for regulating application rate, temperature, and spray patterns

Material: Weather-resistant enclosure with digital controls
Towing Hitch
Attachment point for connecting to prime mover (truck or tractor)

Material: High-strength steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Asphalt Distributor.

Manufacturers of Asphalt Distributor

Manufacturer profiles associated with Asphalt Distributor.

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Frequently Asked Questions

What is the typical tank capacity of an asphalt distributor?

According to directory data, tank capacity ranges from 4,000 to 12,000 liters. However, exact capacity depends on the specific model and chassis configuration. Always confirm with the manufacturer.

How is the application rate controlled?

The application rate is controlled electronically based on vehicle speed, with an accuracy of ±1%. The system adjusts the flow to ensure consistent coverage per unit area. For precise settings, refer to the machine's manual.

What materials are used in the construction?

Common materials include carbon steel, stainless steel, and heat-resistant polymers. These are chosen for durability and resistance to high temperatures. Specific grades may vary; verify with the supplier.

What is the operating pressure range?

The operating pressure is typically 1.0–1.6 bar. This is the pressure at which asphalt is pumped through the system. Always check the manufacturer's specifications for your model.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	100-500 kPa (spray bar operating pressure)
flow rate:	100-1000 L/min (typical asphalt distribution capacity)
temperature:	50-200°C (asphalt application temperature range)
slurry concentration:	N/A (product handles pure liquid asphalt, not slurry)

Product Specifications

Industry Taxonomies & Aliases

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards