Asphalt Distributor | FEITENG

I. Definition and Uses

The asphalt distributor, a crucial piece of equipment in pavement engineering, specializes in precisely and efficiently applying various liquid asphalt materials, including hot asphalt and emulsified asphalt. It serves as both a transporter and applicator of liquid asphalt during pavement construction and maintenance using asphalt penetration or surface treatment methods. Additionally, it can spray asphalt binder onto in-situ crushed soil for constructing stabilized soil pavements. Furthermore, the asphalt distributor is frequently utilized as a carrier for asphalt and emulsified asphalt materials, facilitating construction operations.

II. Classification

Asphalt distributors can be categorized based on various criteria:

1. Capacity of Asphalt Tank: Divided into small (<1500L), medium (1500-3000L), and large (>3000L) sizes, catering to projects of varying scales.
2. Mobility:
   • Hand-Pushed: Ideal for small-scale or confined areas, operated manually with a hand-cranked or piston pump for asphalt delivery.
   • Towed: Attached to a trailer and pulled by a towing vehicle, suitable for medium to large-scale projects, offering high flexibility and operational efficiency.
   • Self-Propelled: Integrates the asphalt tank, distribution system, heating, insulation, recycling, and circulation functions onto a single vehicle chassis, eliminating the need for external towing and ensuring ease of operation.
3. Spraying Method: Distinguished between pump-pressure spraying, utilizing gear pumps to deliver hot asphalt under pressure, and pneumatic spraying, relying on air pressure to dispense asphalt.
4. Drive System of Asphalt Pump: Categorized as either directly driven by the base vehicle's engine or powered by an independent engine, with the former emphasizing energy efficiency and the latter offering increased autonomy.

III. Core Structural Components

The asphalt distributor's core structure encompasses the asphalt tank, heating system, transmission system, distribution system, asphalt pump, and control mechanism. The asphalt tank, constructed from welded steel plates and equipped with insulation, maintains asphalt temperature stability. The heating system ensures that asphalt reaches the optimal working temperature. The transmission, distribution, and pump systems collaborate to achieve precise and uniform asphalt application.

IV. Notable Features

1. Efficiency: Enhances construction productivity significantly, shortening project timelines.
2. Quality: Ensures pavement smoothness and durability through precise control of spraying parameters.
3. Flexibility: A range of mobility options accommodates diverse construction scenarios.
4. Intelligence: Incorporates computer-controlled automation, enabling automatic spraying based on preset parameters and real-time data recording for improved project management and quality control.

V. Widespread Applications in Pavement Engineering

The asphalt distributor plays a pivotal role in the construction and maintenance of infrastructure such as highways, airports, docks, and reservoirs. In highway construction, it creates a robust bonding layer, enhancing pavement load-bearing capacity. For airport runway maintenance, it repairs cracks and improves traction, safeguarding aircraft takeoffs and landings. In dock and reservoir projects, it provides waterproofing and corrosion protection, extending facility lifespan. In summary, the asphalt distributor, with its superior performance and broad applicability, is an indispensable tool in pavement engineering.